By Emily Ball, Forestry Program Manager, WSB

Green infrastructure is a term that has gained momentum recently. It refers to the framework and benefits humans can harness by building, preserving, or maintaining a resilient natural system. Green infrastructure solves some of our most pressing drainage, heat, air, and water quality problems, particularly in areas with the most population. Trees are one of the most vital and effective green infrastructure components that contribute to many cities’ sustainability goals. From stormwater interception and soil conservation to carbon storage and sequestration to improving air quality and reducing heat island effects; tree canopy cover provides many benefits.

Sustainability Goal: Preserve or Increase Canopy Cover

Tree Canopy

Increasing tree canopy cover over time can have a large impact on a community’s sustainability efforts. To meet that goal, the first step is to understand the current canopy cover and perform a “look back” to examine past trends. To gain an understanding, the USDA Forest Service has a free i-Tree Canopy application that quantifies canopy cover across the community.  In the 7-county area of the Twin Cities, communities can use the Metropolitan Council’s “Growing Shade” mapping tool to observe canopy cover and develop goals based on local issues and priorities.  Another step is to quantify the number of ash trees in the community through a tree inventory. All ash trees are at a risk of death which will negatively impact canopy cover if not preserved.

Mature shade trees have a bigger canopy so they can capture and store more carbon than their newly planted counterparts. They also provide the most ecosystem benefits – all compelling reasons to preserve what is already established, while also adding new trees. If an inventory has not yet been performed, the community must determine if a statistical sample will be adequate or if a full tree inventory should be performed. Issues related to data collection variables, potential stratification of the city, long-term management and storage of the data must be considered.  

This quantification work requires expertise, months of implementation, and often exceeds staff time or budgets designated to accomplish the work. While many communities have planners or sustainability staff, they may lack the expertise that a city forester or an ISA-certified arborist has. Even in a community with a thriving forestry program, managing routine work may be at capacity and carrying out projects like a canopy analysis may not fit into the work plan.

How WSB Can Help

Whether it is achieving a Green Step Cities best practice, part of a larger sustainability or climate action plan, WSB staff are prepared to help you define, preserve, and increase your canopy cover with Forestry, Natural Resource and Sustainability experts. We help our clients assess existing canopy, explore trends, provide an inventory to assess species diversity and resiliency, define the ecosystem benefits that public trees are already providing, and examine tangible steps to preserve existing canopies. With the community’s goals in mind and data, we provide a clear strategy to maximize canopy cover over time.

Emily brings 20 years of experience, primarily in community forestry. She has extensive experience in contract administration, management of staff, AmeriCorps members and contractors, budget and grant management, plan review, tree health and condition inspections, outreach and education. She works closely with partner organizations, staff, and the community to educate, manage natural resources and provide excellent customer service.

eball@wsbeng.com | 651.318.9945

Managing local water and wastewater systems can be a complicated and challenging task that has a huge impact on residents and local businesses. Waiting to find solutions just isn’t an option. Below we discuss the top five challenges facing city wastewater systems today. Addressing these challenges before they become a real problem is key to continued success in your community.

Aging Infrastructure: The American Society of Civil Engineers recently gave our nationwide infrastructure (including wastewater treatment plants) a D+ grade. Minnesota wastewater treatment facilities are not immune to the aging infrastructure issue. Wastewater treatment facilities generally have a design life of 20-years. The need to start planning for repair and replacement of facilities is a continuous cycle.

Funding: Utilities know upgrades are needed due to growth and capacity limitations, aging infrastructure, and new effluent limits. Funding sources in Minnesota for improvement projects include Public Facilities Authority (PFA) low interest loans and new limits are typically eligible for Point Source Implementation Grants (PSIG). The best funding option for each facility will depend on its unique situation. It is important that utilities manage connection fees and user rates appropriately to ensure funds are available to pay for improvements.

Effluent Limits:  Ever evolving effluent limits are a constant challenge for wastewater utilities. Wastewater facilities in Minnesota are receiving stringent effluent phosphorus, total nitrogen, total dissolved solids (TDS), and chloride limits. Each of these limits typically require upgrades or additional processes to the wastewater facility. A unique situation for utilities is the lower chloride effluent limit. This may require upgrades to a community’s drinking water treatment plant to provide softened water to users so that chlorides are not added to wastewater streams by private water softeners.

Biosolids Handling:  Biosolids are very challenging to treat and dispose of for any wastewater facility.  The processing of biosolids generally depends on available resources/funding at the utility and the staffing levels of wastewater operators. Stringent effluent limits such as lower phosphorus limits are significantly increasing the volume of biosolids generated at wastewater treatment facilities.  Emerging PFAS regulations are adding further challenges to the final disposal of biosolids from wastewater treatment facilities.

Operations Personnel:  Like many industries, the wastewater treatment industry has been greatly impacted by a shortage of operations staff. This shortage of operations staff is due to an aging work force retiring and smaller numbers of replacement staff entering the operations field. The shortage of operations staff is also enhanced by reclassification of wastewater treatment facilities to Class A and B facilities to meet stringent effluent limits. Utilities need to plan accordingly to minimize impacts from operational staff shortages by promoting education, training, and advancement of operation staff. Utilities must also implement a staff retention plan or engage with an outside consultant to maintain or increase their staffing levels.

WSB’s team of experts are available to help with any or all the wastewater challenges discussed here. We leverage and advance technology to provide system assessments, facility plans, funding services, engineering design, construction administration and observation, and on-going personnel support for wastewater systems. 

By Eric Zweber, Sr Project Manager, WSB

Communities across the country see big opportunities around the $1.2 trillion federal infrastructure bill. With this funding, there is a real opportunity for communities to invest in projects for low-income and traditionally underserved communities and advance sizable projects that create a better community for all. Including equity capacity building in infrastructure project planning will not only enhance local communities and benefit residents, but it can also give projects a competitive edge in securing dollars as communities compete for funding.   

Here are some ways that communities should be thinking about building equity into their projects.

Understand the Needs of the Community & Those You are Working to Serve

As leaders look at the needs in their communities, it is critical that investments are made in a way that is not only smart and helps add value to communities, but that also shows they are listening to the voices of residents who are impacted by these projects and including them in the decision-making process.

When community leaders work with stakeholders to build consensus, it ensures they are building projects that improve equitable outcomes and make them more competitive for grants and funding to advance the projects. Tribal communities, for example, have been disproportionately impacted by natural resource extraction and land development. Low income and BIPOC (black, indigenous, and people of color) communities often lack adequate investments in everything from transportation infrastructure to community development. Building relationships and trust with impacted communities is central to this work and can help advance the goals of all stakeholders involved when done in a meaningful fashion.

Bringing an Equity Lens to Different Types of Projects

Equity capacity building can be brought into may kinds of projects and there are three big categories to consider when thinking about advancing equity using the Infrastructure Bill:

  1. Improving access and accessibility to infrastructure for people of all abilities; including public transit, transportation access, and modifying infrastructure to meet current standards and management best practices.
  2. Investing in projects where there is a high percentage of BIPOC or low-income population.
  3. Advancing priorities for indigenous communities that elevate equity, sustainability, and self-sufficiency.

Whatever type of project you are working on, understanding how it advances equity and how to communicate that can help secure funding and move it forward.

Comprehensive Plans & Big Picture Thinking

A community comprehensive plan brings together leaders and stakeholders to look forward at population growth and development opportunities to create a vision for the future. Plans need to be forward-looking, while also flexible enough to meet changing demands as communities grow and change. Equity and sustainability are important elements to consider and weave into community planning.

What’s more, community plans often include big projects and changes that can drive meaningful community progress. However, sometimes resources are limited or other projects take precedence. With the massive investment in infrastructure from the federal government, this is a chance for communities to look at their comprehensive plan and move the big picture projects with long-term benefits forward.

This is a unique opportunity to go after projects that build equity and will positively impact communities and citizens for decades to come.

How WSB Can Help

Whether it’s reviewing and updating community comprehensive plans, using community engagement, designing, writing grant applications, or seeking out partners to support your project, WSB has a team of experts who can help your community navigate and execute on projects that improve your community and build equity capacity.

The infrastructure bill is a once in a generation funding opportunity, and a chance for local leaders to fund big, bold projects that will benefit communities for generations to come.

Eric has over 20 years experience with community planning, renewable energy, and sustainability projects. He has worked cooperatively with a number renewable energies developers to develop both solar and wind resources and is a past board member of the Minnesota Solar Energy Industrial Association (MnSEIA). He has a passion for sustainable and resilient practices to address the needs of communities and larger public.

[email protected] | 612.581.0504

October 14, 2022
By Lori Johnson, Sr Professional Community Planner, WSB

Housing prices are expected to jump nearly 10 percent by the end of 2022. Interest rates are on the rise and inflation is pushing the price of labor and materials up and up. The result, tied with an already exacerbated shortage of starter homes and affordable housing, is a growing demand for multi-family housing. Market rate apartments are a big trend in communities across the country right now as the demand for rentals grows.

What does this trend mean for communities, for developers, and for long-term strategic planning? Here are some things to consider around multi-family housing.

Developer and Consumer Demand

With more people searching for apartments, developers are on the hunt for land zoned and guided appropriately for multi-family uses. There are, of course, a limited number of parcels that have the proper land use and zoning for apartment buildings and townhomes. If developers cannot identify parcels of land currently designated for apartments but see an opportunity, they are encouraging community leaders to rezone or reguide land where possible.

And what makes a parcel of land ideal for market rate apartments? Developers look at several factors including uncomplicated access to major roads, proximity to restaurants, bars, shopping and commercial property, and good visibility.  Moreover, many local businesses like to have apartments nearby, as they provide customers concentrated in a centralized location and may encourage multi-family and mix used development builds in certain areas.

Considering the Pros and Cons of Multi-Family Housing

For communities, comprehensive and strategic planning means developing land in ways that meet both short and long-term goals and benefits residents, small businesses and overall growth. Not every project a developer proposes will be approved or should be approved, but communities are also looking at the market which is driving apartment growth right now.

Whether a community is rural, exurban, suburban, or metropolitan can also impact decision making between single family and multi-family housing. Are you a suburb or city where promoting concentrated apartments that are walkable, accessible, and attracts nearby commercial businesses make sense for land development? Or are you an exurban or rural community where the greater attraction in the long-term will be single-family dwellings? They also must weigh going with current market demand or waiting to see if and when the market may shift.

Rezoning land for apartments can also bring concern and protest from local property owners. Many people worry that apartments bring more cars, more noise, more lights, and can change the character of neighborhoods. City councils can also explore opportunities to mitigate neighborhood concerns, looking at things like berms and landscaping, fencing, traffic studies, building height ordinances, and more.

On the positive side, apartments provide the type of housing that is wanted and needed right now as rising prices make home ownership out of reach for many. Apartments also provide amenities many people want like gyms, pools, no maintenance costs, greater social connections, etc.

All cities have different types of constituents, so the question is how to balance the needs of renters and non-renters.

How WSB Can Help

For communities navigating rezoning, developer engagement, and a growing demand for multi-family housing, WSB can help. We can help city leaders navigate ordinance compliance, planning augmentation and staff review of site applications, and can provide market guidance to elected officials to know what is happening right now. We can also help local governments review and update their comprehensive plans.

The market for multi-family housing is moving quickly, and our expert staff can help guide you through it all and ensure you make the decisions that best meet the needs of your residents and community.

Lori has more than 25 years of experience working in a municipal planning department, having worked her way up through the planning department at the City of Blaine to become their city planner. She has worked in all aspects of city planning activities including project management, site plan and application review, public participation and long range planning.

[email protected] | 612.364.3029

July 15, 2025
By Shawn Poe, Director of Municipal Services and Kim Lindquist, Director of Community Planning, WSB

Staff turnover, economic conditions and resources all impact the capacity and workload of city staff. Scalable staff augmentation has become another tool in the toolbox of cities who are hoping to backfill a role, complete a special project or increase available resources. Shawn Poe, Director of Municipal Services, explores the benefits of staff augmentation with Kim Lindquist, Director of Community Planning & Economic Development.

SP: Why would a city consider staff augmentation?

KL: The number one reason to consider staff augmentation is to support staff turnover and coverage during a time of transition. If a staff member resigns, it often takes months to fill a vacancy. The great thing about staff augmentation is that cities can keep their projects and workload moving forward with limited interruption during that interim time. It also allows cities to evaluate a position to determine if it requires a full-time employee, or if tasks can be handled on an as needed or part-time basis.

SP: Is there a magic number of hours or roles for staff augmentation?

KL: No, and that’s the beauty of it. It’s scalable. A city may need support for a month, or for a long-term project. In my experience staff augmentation looks different for each community, which is great because WSB has the flexibility to fit the client need. We have situations where the augmentation is project based, like review of a specific planning project, and we have other clients where the augmentation is service based, for example conducting code enforcement for the community. We work with the client to arrive at a solution that works for their needs including providing in-office hours, dedicating two or three days a week or working within a specific time period until the project is completed.   It’s a flexible option for cities that can be scaled up or down at any time. It really depends on the community and their unique needs.

SP: How is the talent shortage impacting staffing resources?

KL: In many local governments, we’ve seen a wave of baby boomers retiring that held upper-level director positions. As they retire, finding leaders to replace them has been challenging as attracting and retaining talent is a struggle across industries.  Communities who are having a hard time finding candidates to fill roles are relying on augmentation to ensure they’re moving their projects and initiatives forward while they work to fill those positions.

SP: What do you think are the biggest benefits of staff augmentation.

KL: I think many communities don’t realize the financial savings that come with staff augmentation. It alleviates the need to hire an FTE and allows staff to have additional bandwidth to focus on higher level tasks and council policies rather than routine tasks. When the economy is strong, people don’t think about the pluses and minuses of hiring someone, but at the same time, no one wants to lay anybody off.  The true benefits lie in the scalability and flexibility of staff augmentation. 

When WSB supports communities, we stress the full resources behind us. I work in planning, but have quick access to expertise in many areas including economic development, code enforcement, public works, city engineering, sustainability, etc. We bring a wealth of expertise to the table to help support a community’s comprehensive needs.

Shawn is a Director of Municipal Services based in the Denver office and brings almost 30 years of experience in the public and private sectors in both Colorado and Texas. Throughout his career, he has supported communities across the nation as a city engineer, director of public works, and director of engineering.

[email protected] | 214.773.6767

Portrait of Shawn Poe

Kim is a planning professional with over 30 years of experience overseeing a variety of complex planning projects. Kim worked in high growth communities working with developers and the public on entitlements for residential development and business attraction to the city.

[email protected] | 612.670.2790

Kim Lindquist

October 14, 2022

Economic instability, rising inflation, and labor and supply chain issues have created price fluctuations and instability in the construction industry. Simply put, costs and supply availability are harder to predict, adding undue complications to those planning and executing construction projects. 

Every project, every client, and every contractor is different, but many are facing similar challenges. While there are no quick and easy solutions to completely predict and overcome rising costs and swift market changes, there are some things to consider that can help mitigate risk and help you overcome obstacles. 

  1. Consider alternate materials. Material acquisition is more difficult than ever as our industry feels the squeeze of supply chain shortages. It can be difficult for suppliers to provide certain building materials to contractors at certain times, and short summer construction seasons in colder climates can squeeze supplies even more. This then causes problems for owners who don’t have a backup material they would like to use for their project. When preferred materials aren’t available, have a contingency plan and substitute building materials where possible. Clear communication between contractors and owners about which substitute materials should be used is an important part of the design process.
  1. Plan ahead. It is important to plan out projects ahead of time as much as possible and stick to your timeline. Right now, suppliers are having difficulty putting materials on hold for clients. Planning ahead and coordinating with suppliers on timing of materials can make a huge difference.
  1. Be flexible and work in stages. As the road construction season comes to an end in northern states, many suppliers are out of high-demand materials, meaning a good number of projects will have to be put on the waiting list as supplies come in. If you can delay certain parts of a project and work on others to keep a project on schedule, this can help overcome temporary roadblocks. Completing the project in increments also gives the construction team enough time to complete the tasks and gives the contractor and owner time to coordinate material acquisition.
  1. Understand risk and how developers predict cost. Trying to predict project costs has become more difficult, from the price of materials to the cost of labor, and everyone is working to keep their financial risk at a minimum. Often, there is a sizable imbalance between the price it takes a contractor to complete a project and the price the contractor bids for the work. Dramatic price fluctuations have caused a great deal of frustration for owners who are confused as to why a project might be so expensive compared to the price of the same project a few months earlier. Different types of projects like design-build and construction management/general contractor, for example, come with different amounts of risk, so it’s important to think through what works best for your project. 

While there’s no crystal ball in the construction industry, common sense planning and following these tips can help mitigate risk, provide confidence to all parties involved, and set your project up for success. 

October 14, 2022
By Bridget Rathsack, Program Manager and Eric Zweber, Sr Planner, WSB

The $1.2 trillion federal infrastructure bill opened the door to many new opportunities that can help improve historically underserved communities through healthy streets. With such a large infusion of money into our nation’s infrastructure, now is the time to ensure that future planning and investments in public spaces serve those who have been too often overlooked in community planning. 

Whether it’s reducing heat islands through pavement reduction or increased tree cover, reshaping public spaces to better meet community needs, or reducing the risk of pollutants and other health effects impacting low income and BIPOC neighborhoods, equity must be part of planning for healthy streets and public spaces. 

Where can communities start? Here are some ideas. 

Explore and Recognize Areas of Need First

Directing the money to the places that need the most investment can create the biggest impact. Communities must map out and understand the areas where BIPOC, low-income, low tree cover, and high-transit-needs are present.

Recognizing these areas of need is critical but listening to the people who live in these communities is even more important. Ensure that investments being made meet the needs of the community you intend to serve and that all voices are at the table. Infrastructure investments should make a meaningful difference for those actually living and working in those communities. 

Building Healthy Streets and Improving Public Spaces

What kinds of projects can improve public spaces in underserved communities? Thinking about all three pillars of sustainability – environmental, social, and economic – will help drive a project’s potential positive impact on the overall health and well-being of residents. 

Many communities are exploring installing and maintaining more sustainable pavement options to help improve safety, transit, and overall community health. For some communities in certain climates, pervious pavement, where water can be absorbed into the ground below and reduce runoff, is a sustainable choice. For others, installing light colored pavement instead of traditional asphalt can reduce heat islands. 

Tree canopies and cover are also important for both the environment and human health. Studies have shown that residents in low-income and urban communities face higher temperatures due to the urban heat island effect. Urban heat islands increase air pollution, energy consumption, compromise human health, and impair water quality. 

Finally, creating and improving pedestrian walkways and transit stop locations increases a community’s connection and grows opportunities for those who depend on public transportation. 

How WSB Can Help

Whether it is helping you explore and identify needs within your community, planning for the future, or assisting you in applying for grants – WSB can work with you directly every step of the way to ensure your community obtains all the resources it needs. 

Now is the time to make a big investment in your community, improve public spaces, and ensure you are doing it in an equitable manner that benefits traditionally underserved communities and people. 

Bridget serves as the Sustainability Program Manager at WSB, helping propel sustainability projects and opportunities forward for our clients to reduce costs while meeting their community and stakeholder needs. She has led the Sustainability Growth Coalition at Environmental Initiative and served as chair of the St. Louis Park, MN Environment and Sustainability Commission, moving forward progress on climate and energy, while engaging community members and business leaders.

[email protected] | 920.202.0234

Eric has over 20 years experience with community planning, renewable energy, and sustainability projects. He has worked cooperatively with a number renewable energies developers to develop both solar and wind resources and is a past board member of the Minnesota Solar Energy Industrial Association (MnSEIA). He has a passion for sustainable and resilient practices to address the needs of communities and larger public.

[email protected] | 612.581.0504

Natural Pipeline Rupture & Fire

October 17, 2022

In May of 2020, a natural gas transmission pipeline ruptured in Hillsboro, Kentucky, causing a fire and millions of dollars in damage. The rupture, which occurred on a hillside pipe segment, had previously been identified by the operator for geotechnical monitoring and mitigation due to the presence of an active landslide. Following the incident, the National Transportation Safety Board (NTSB) released a pipeline investigation report (PIR-22/01) on the incident. While thankfully there were no fatalities or injuries, the operator estimated the cost of property damage and emergency response was $11.7 million.

Between 2018 and 2020, the operator performed multiple integrity management studies, including in-line inspections (ILIs) and geohazard assessments at the site of active landsliding.  Integrity studies indicated that the affected pipeline was exposed to external loads, or loads transmitted to a pipeline from an external source.  Although the operator planned to mitigate the hazardous site in Summer 2020, hillslope failure and pipeline rupture occurred before mitigation was completed.

Tips for Proactive Pipeline Management and Risk Mitigation

For gas and hazardous liquid pipelines, proactive management of geohazard risks is critical. To ensure pipeline safety and integrity, here are some tips for operators:

  1. Perform comprehensive geohazard risk assessments, including field surveys, to efficiently identify, document and prioritize the nature and extent of potential threats. Detailed investigations should reduce uncertainly and improve risk and financial-based decision-making. 
  2. Quantify external loading and load distributions for at-risk pipelines.
  3. Monitor environmental conditions and changing weather patterns.  Soil stability can be adversely impacted by changing weather patterns, so it’s important to check soil and surface materials regularly.
  4. With the assistance of geotechnical engineers, design and implement site-specific monitoring and mitigation plans based on risk analyses and load calculations.  Monitoring and mitigation plans should provide operators sufficient time and information to act in response to geohazard events.

How WSB Can Help

Due to the complexity and variability of geohazards, WSB’s Energy Sciences team recommends comprehensive geohazard risk assessments be performed for energy pipelines on five-year schedules. Our team of scientists and risk assessment specialists can help you identify, mitigate, and manage geohazard risks through services tailored to meet regulatory requirements and individual risk profiles. 

On May 26, 2022, the Pipeline and Hazardous Materials Safety Administration (PHMSA) issued an updated advisory bulletin (Docket No. PHMSA-2022-0063) to remind owners and operators of gas and hazardous liquid pipelines about the potential for damage and safety-related issues caused by geologic hazards (geohazards), including earth movements and climate-related hazards. Geohazards are naturally occurring and dynamic processes, capable of causing widespread damage, loss of property and/or injury and loss of life. 

Earth movement hazards include slope instability, subsidence, frost heave, soil settlement, erosion, scour, and earthquakes.  The causative factors of earth movements are myriad and complex but rooted in the understanding of regional geology, environmental conditions, and human influence. Earth movements can be exacerbated by local surface conditions (variable, steep, and rugged terrain), changing subsurface conditions, and climate-related hazards (e.g. heavy rainfall, flooding, washouts, weakened or unstable soil). It is important to understand that natural geohazards rarely occur in isolation but instead as hazard cascades: events that precipitates another, increasing resultant risks and consequences. Thus, it is imperative to consider and examine all possible geohazard factors when determining risk.

As outlined in 49 CFE 192.103 and 49 CFR 195.110, gas and hazardous liquid pipelines must be designed to withstand external loads, including those imposed by geohazards.  In addition, PHMSA requires operators to take preventative and mitigative measures to avoid pipeline failure and consequences, such as those caused by geohazards (49 CFR 192.935 and 49 CFR 195.452). Additionally, integrity requirements pursuant to geohazards can be found under 49 CFR 192.917 and 49 CFR 195.452.

To ensure pipeline safety and integrity against geohazards, operators should consider taking the following actions:

  1. Identify areas surrounding the pipeline which may be prone to earth movement and other geohazards. For each identified location, plans should be developed, with the assistance of geotechnical engineers, outlining design, construction, and monitoring procedures, based on site-specific hazards.
  2. Monitor environmental conditions and changing weather patterns.  Note, soil stability can be adversely impacted by changing weather patterns; evaluate soil and surface materials regularly.
  3. Mitigation measures should be designed and implemented, as need be, based on site-specific conditions.

Due to the complexity and variability of geohazards, WSB’s Energy Sciences team recommends comprehensive geohazard risk assessments be performed for energy pipelines on five-year schedules.  Our team of scientists and risk assessment specialists can help you identify, mitigate, and manage geohazard risks through services tailored to meet regulatory requirements and individual risk profiles. 

By Jake Newhall, Project Manager, WSB

Extreme rainfall events are occurring with increased frequency. Due to climate and environmental changes, many cities and communities are facing an increased flood risk and must act to protect their communities, residents, and infrastructure. A 2019 report by the National Institute of Building Sciences noted that Natural hazard mitigation saves $6 for every $1 spent on infrastructure resilience.

Source: National Institute of Building Sciences

How can community planners, engineers, and elected officials prepare for and protect their communities from flooding? Here are some guidelines to help reduce flood risk in your community when a storm hits.

Preparing for and Understanding the Weaknesses in Your Systems 

Flood vulnerability and resiliency studies are a process for evaluating a community’s ability to withstand rainfall and identify flood risk. These studies look at the existing systems and determine the risks, and where improvements can be made to protect priority infrastructure. This is vital for communities to reduce risks and flood damage to property and public infrastructure – especially in densely populated areas and those near major roadways. 

As we face more extreme weather events, communities should consider increased rainfall depths and intensities so they can be proactive in system planning. The current storm probabilities available have not been updated since 2014, yet rainfall trends show increases over the last decade. Communities can greatly benefit if they anticipate the future probabilities of storms and construct systems that can handle more intense rainfalls. Using a range of design storms, you can determine flood depths, frequency, duration and assign risk to help prioritize funding. 

Completing a risk analysis and inundation mapping utilizing existing modeling can be a low-cost way to start evaluating your system.

Identifying Projects to Reduce Flood Risk

Locating the areas of risk in your community is critical to flood prevention. That could include finding where your system needs more capacity and storage to reduce flooding, determine what properties are prone to flooding, and creating solutions such as relocation, emergency response, or additional flood protection investments. 

Where collected water goes is important when examining and determining updates for your systems. The primary options are to either pass the water downstream into creeks and rivers, or store it in drainage ponds, underground systems, or other storage areas. Another option is to reduce the impervious footprint to reduce the amount of runoff that is generated. Emerging technology allows for predictive rainfall systems that can generate additional storage ahead of a large rainfall event by releasing water early and prior to a peak event through a critical area.

The risk with moving the storm water downstream is the possibility of flooding and eroding the creeks and rivers. If conveyance capacity is increased to the downstream system, it is necessary to make sure that proper measures are taken to avoid flooding and erosion that can harm waters and ecosystems. Water storage options like drainage ponds or underground storage, are options for many communities to utilize. Balancing needs, functionality, and the cost of storage and land is important for communities to explore. Water quality and pollutant removals can be a secondary benefit of many stormwater storage systems that can help communities achieve other goals at the same time.  

Finally, for most communities, the needs often outweigh the budget available to accomplish them all. WSB helps clients navigate flood vulnerabilities, pursue grant funding, and help make informed decisions that best serve a community’s individual needs. 

Jake has more than 15 years of engineering experience designing and managing many types of water resources projects, including modeling, planning, design, maintenance programs, and construction. Jake has worked with various municipalities, counties and state agencies to solve challenging water quality and water quantity problems.

[email protected] | 763.231.4861

WSB Staff working in the lobby of the WSB headquarters.

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