Green Infrastructure Grant Program

Stream surrounded by trees and shrubbery

"Infrastructure" often brings to mind bridges, roads and pipes. Green infrastructure refers to the vital natural systems that create the conditions for healthy human communities. Our streams, prairies, forests and wetlands:

  • Cool surrounding areas
  • Slow and filter water
  • Clean the air we breathe
  • Offer access to nature

Green infrastructure also refers to built systems, such as bioswales and rain gardens, designed to mimic natural systems. Johnson County's Green Infrastructure Grant Program aims to preserve, expand, connect and enhance natural green infrastructure systems.

About the Grant Program

Since 2021, Johnson County's Stormwater Management Program has designated funding toward water quality improvement projects or green stormwater infrastructure. With this announcement, the program seeks to fund implementation projects that advance watershed health, reduce flooding and erosion risks, and improve stormwater quality in alignment with adopted watershed master plans. Projects may fall into one of two funding areas:

Natural Area Preservation and Enhancement

Projects that protect, restore or enhance natural systems providing stormwater and watershed benefits, including but not limited to:

  • Floodplain, wetland and riparian corridor protection or restoration
  • Native vegetation and tree canopy enhancement
  • Stream and bank stabilization using nature-based approaches

Urban/Suburban Area Improvements

Projects that address priority risk areas, mitigate heat island effects or treat impervious surface runoff, including but not limited to:

  • Native vegetation and tree canopy expansion and/or enhancement
  • Stream and bank stabilization using nature-based approaches
  • Runoff reduction practices

Diverse understory plants act like living filters, absorbing excess nutrients that become pollutants in our streams.

Deep-rooted native prairie systems allow rainwater to soak into the ground rather than running off the surface, greatly reducing soil erosion during storms.

In addition to efficiently removing nutrients and trapping sediment from stormwater runoff, wetlands support diverse microbial communities that break down and transform pollutants including pesticides, organic chemicals and some pathogens.

Riparian tree plantings slow runoff from lawns, streets and parking lots allowing excess nutrients to be absorbed by plants, capture sediment and prevent erosion, and help shade/cool streams.

Beaver dam analogs constructed in ephemeral headwater streams slow water velocity, reducing turbidity and downstream sedimentation that smother aquatic habitat, and help to stabilize downstream channels. They increase groundwater recharge and capture excess nutrient runoff, reducing risk of downstream algal blooms.

Heat islands are areas with the highest percent of impervious surfaces and the least amount of vegetation. Breaking up heat islands with a combination of native plants and trees can reduce air temps by 5-10 degrees F and pavement surfaces by 30-40%. This measurable difference not only provides more comfortable conditions for humans, but cools stormwater that runs over impervious surfaces and into streams - improving water quality conditions in our streams and waterways.

Eligible Applicants

Eligible applicants include:

  • Johnson County and its cities participating in the Stormwater Management Program (Parks Departments are especially encouraged to apply)
  • Schools, watershed organizations or non-profit entities
  • Private entities with “above and beyond” regulatory development standards projects. Projects that are only meeting minimum development standards or some other regulatory requirements (local, state or federal) are not eligible for this funding.

All projects must be located within Johnson County and be consistent with adopted watershed master plans.

Priority Areas

The Stormwater Management Program aims to achieve the greatest water quality results in the most efficient, data-driven ways. Recent watershed planning efforts identified areas with the most potential to deliver meaningful watershed benefits.

Applicants with an interest in diving deeper into the watershed master planning details may access the plans and data dashboard.

Map of Johnson County Stormwater Priorities for Green infrastructure Grant Program

Funding

Funding Available

  • Total Funding Available: $1,500,000
  • Minimum Award Per Project: $75,000
  • Maximum Award Per Project: $500,000

Funding Structure

  • Projects may receive 50% to 100% of eligible project costs.
  • Up to 100% funding may be awarded for high-priority, high-impact projects that strongly advance watershed master plan objectives or address critical flooding, erosion or water quality issues. See map above for Green Infrastructure priority areas.
  • Applicants may apply for more than one project.

Johnson County reserves the right to partially fund proposals or fund fewer projects based on available resources and program priorities.

Application Process & Key Dates

Full proposals require detailed scope, design, budget, schedule, technical documentation (as applicable), and anticipated outcomes. They must include a 3-5 year establishment and maintenance plan.

Evaluation Criteria

Projects will be evaluated and scored based on:

  • Alignment with Johnson County watershed master plan priorities
  • Anticipated stormwater, flood reduction and water quality benefits
  • Environmental and community co-benefits
  • Technical feasibility and readiness
  • Cost-effectiveness and leverage of matching funds

Projects that require any level of engineering will undergo additional technical review.

Key Dates

  • Virtual Q&A: May 15, 2026 at 10 a.m. (via Microsoft Teams at this link)
  • First-Round Application Deadline: June 5, 2026 (by 5 p.m.)
  • Second-Round Application Deadline: Aug. 28, 2026 (by 5 p.m.)

Frequently Asked Questions

No, the grant timeline is flexible, although if you expect for a project to take more than 2-3 years for installation, consider phasing the project and making future requests for future phases. It is our intention that this will be an annual opportunity. Additionally, establishment and maintenance period can fall outside of the grant project period. It will be monitored by annual inspections by SMP staff.

If you plan to request 100% project funding, then we want you to make the case for how your project is going to explicitly benefit an identified risk area. But if you are working from a plan, say, a parks plan that has been approved and contains your specific priorities, it is still perfectly eligible for this program, and we want you to pursue your highest priority projects. It may just mean you request 50% or 75% funding, or whatever the amount is that will help your project move forward.

Given that we are funding non-structural, nature-based solutions, we are not requiring any sophisticated modeling or calculations. We may apply some simple load reduction calculations on our end to gauge cost-effectiveness, but this is a low-tech approach by design. 

If you are working from an existing plan that contains project priorities, use and provide what you have already developed. Characterize the benefits, as you understand them, in as simple a way as possible. What you submit needs to be actionable and should be in a form that can guide your work.  

If you want to use this program to meet an MS4 requirement – say, for a public engagement activity where residents plant trees in a riparian area – you can mention that. But this program is not at all limited to fulfilling MS4 requirements. 

While we haven’t finalized a scoring sheet, our priorities for project selection will consider: 

  • Alignment with SMP watershed management plans.
  • Potential for water quality improvement/stormwater runoff reduction. 
  • Multiple benefits of ecological function and resilience, public benefit/access/educational value, heat island abatement, protection/enhancement/connection of highest ecological value areas. 
  • Cost-effectiveness, leveraging of other sources of funding, volunteer, support. 
  • Likelihood of long-term success. 

Yes. This is a departure from previous eligibility for SMP funding, so the answer is yes, but we will be working through a new process that will take some additional effort. There will need to be an agreement in place with the property owner guaranteeing access for establishment, maintenance and ongoing monitoring through an established lifetime of the project. The details will be negotiated and contained in the contract that is ultimately enacted with the applicant.  

This can also be negotiated as part of a contract, depending on a project timeline. For example, if the request is for a tree planting that will happen in fall 2026 and be completed within a year, we will likely ask for a final report with an invoice upon project completion. If it is a several year period, we will ask for more periodic reporting, and if an applicant requests an advance, we will also likely ask for periodic (semi-annual or annual) reporting. 

Technically yes. However, if this is what you will be applying for, please schedule a meeting prior to submitting, as there will be parameters for this type of project. The bar is high and will need to accomplish multiple benefits – the property would need to have high ecological value or potential for restoration, and likely provide connectivity with current trail system, and be identified in existing plans as high priority for acquisition/preservation.  

Growing community engagement is a priority for us, so that will be considered favorably. 

We have designated $1.5 million for this initiative, which is the same amount as has been available in previous years, and gone largely unspent. We anticipate that there may be funding available for the second round. The reason for the early deadline is that we know there are shovel-ready projects that can be completed in 2026, and we want those projects to move forward. 

A few examples locally include privately owned wetlands that are publicly accessible. They need rehabilitation to restore full function and to recover the water quality benefits. Those are great examples of the intent of the program, but there could be others. Private land owners who may be open to riparian buffer expansion or installing a wetland may be eligible. We want to capture community benefits wherever possible.  

How to Apply

Apply for the Green Infrastructure Grant Program by completing the application below. If you have questions during the application period, please email Lesley Rigney at lesley.rigney@jocogov.org.

Note: Johnson County reserves the right to amend this grant notice, reject any or all proposals, and make awards in the best interest of the Stormwater Management Program.

Grant Requirements

  • Projects must comply with all applicable local, state and federal regulations.
  • Long-term operation and maintenance commitments are required.
  • Grant awards will be provided on a reimbursement basis unless otherwise requested and approved.
  • Funded projects must be completed in accordance with the executed grant agreement.