National Estuary Program
Active
- Assistance listing
- 66.456
- Grant awards
- 707 $658,688,091 in federal obligations
Program facts
- Also known as
- NEP
- Assistance types
-
- Project Grant
- Formula Grant
- Cooperative Agreement
- Treasury account
-
- 68-0108-0-1-304
- More information
Program details come from SAM.gov Assistance Listings. Updated . Grant award figures come from USAspending.gov.
About this program
The Environmental Protection Agency operates the National Estuary Program (CFDA 66.456) to protect and restore water quality and ecological integrity in 28 designated estuaries of national significance, with the most recent grant award issued on October 1, 2026.
The program funds implementation of Comprehensive Conservation and Management Plans (CCMPs) through ecosystem-based management across designated estuary systems. Funded activities include water quality monitoring and restoration, habitat protection and enhancement (wetland restoration, seagrass and eelgrass recovery, shoreline stabilization), aquatic organism passage and dam removal, stormwater management and green infrastructure, invasive species control, community engagement and environmental education, and coordination of CCMP implementation among federal, state, local, and nonprofit partners. Recent awards show substantial infrastructure work funded through the Bipartisan Infrastructure Law, including construction of seagrass nurseries, municipal stormwater retrofits, oyster reef restoration, and nature-based coastal resilience projects.
Award activity remains consistent: 707 total awards since 1985, with 37 awards in 2025, 24 in 2024, 28 in 2023, and 36 in 2022. Combined federal dollars obligated total $658.7 million across a non-federal cost-share of $1.08 billion total. The assistance-type mix is predominantly Project Grants (58 percent, 411 awards), with Formula Grants comprising 39 percent (276 awards) and Cooperative Agreements a smaller 3 percent (20 awards). The EPA headquarters office leads with 524 awards totaling $306 million in federal dollars, while EPA Regions 10, 4, 1, and 2 collectively account for the remainder. Regional variation is significant: EPA Region 10 manages fewer awards (13) but obligates $95.4 million federal dollars, indicating larger, longer-term awards in Pacific Northwest estuaries.
Recent awards demonstrate the program's current orientation toward Infrastructure Investment and Jobs Act (IIJA) implementation and base CCMP funding across all 28 designated estuaries. Puget Sound Partnership received $73.5 million (October 2025) for ecosystem recovery work; Narragansett Bay Estuary Program received $909.8 thousand (October 2026) for pollution reduction and habitat restoration subawards; Delaware Center for Inland Bays received $910 thousand (April 2026) for oyster reef recruitment and seagrass expansion; and Lower Columbia Estuary Partnership received $4.4 million (July 2025) for habitat restoration and public access projects. Typical individual award amounts range from $850 thousand to $2.7 million for base funding, with some IIJA-supported grants reaching $73.5 million.
No active grant opportunities are currently posted in the source; the most recent solicitation listed closed in 2021 (EPA-OW-OWOW-21-03, due November 15, 2021). Application deadlines for competitive awards are typically provided in future Notices of Funding Opportunity; contact EPA headquarters or regional offices for current opportunity status and timelines. The program operates through both competitive and non-competitive funding mechanisms. Non-competitive base awards are negotiated directly with management conferences and their hosts; competitive opportunities are evaluated on technical merit and relevance to CCMP objectives. Recipients must maintain financial records for three years from final expenditure report submission and are subject to EPA and federal audit.
Objective and description
- Objective
The National Estuary Program (NEP) goal is to protect and restore the water quality and estuarine resources of estuaries and associated watersheds designated by the EPA Administrator as estuaries of national significance. The 28 estuaries of national
- Description
The National Estuary Program (NEP) goal is to protect and restore the water quality and estuarine resources of estuaries and associated watersheds designated by the EPA Administrator as estuaries of national significance. The 28 estuaries of national significance, or NEPs, use an ecosystem-based management approach to help achieve their protection and restoration goals.
Eligibility
- Applicant eligibility
Assistance agreements are issued only to those estuaries designated by the Administrator. The Administrator is authorized to make grants to State, interstate, and regional water pollution control agencies and entities; State coastal zone management agencies; interstate agencies; and other public and private nonprofit agencies, institutions, organizations, and individuals (Section 320(g)(l)). Profit making organizations are not eligible for grants. For certain competitive funding opportunities under this assistance listing, the Agency may limit eligibility to compete to a number or subset of eligible applicants consistent with the Agency's Assistance Agreement Competition Policy.
- Beneficiary eligibility
Anyone/General Public.
- Uses of assistance
Clean Water Act Section 320 authorizes issuance of assistance agreements used to meet requirements to develop and implement CCMPs. Annual workplans, which address priority actions in the CCMPs, lay out projects to be undertaken during the fiscal year. They are developed and approved by each management conference. Twenty-eight estuaries have been designated as estuaries of national significance; those 28 are: Long Island Sound Study, Puget Sound Partnership, Buzzards Bay National Estuary Program, Narragansett Bay Estuary Program, New York-New Jersey Harbor Estuary Program, Delaware Center for the Inland Bays, Sarasota Bay Estuary Program, Galveston Bay Estuary Program, Santa Monica Bay National Estuary Program, Albemarle-Pamlico National Estuary Partnership, San Francisco Estuary Partnership, Casco Bay Estuary Partnership, Massachusetts Bays National Estuary Program, Indian River Lagoon National Estuary Program, Tampa Bay Estuary Program, Peconic Estuary Program, San Juan Bay Estuary Partnership, Coastal Bend Bays and Estuaries Program, Tillamook Estuaries Partnership, the Barataria-Terrebonne National Estuary Program, Piscataqua Region Estuaries Partnership, Barnegat Bay Partnership, Maryland Coastal Bays Program, Charlotte Harbor National Estuary Program, Mobile Bay National Estuary Program, Morro Bay National Estuary Program, and Lower Columbia Estuary Partnership. NEPs and their partners carry out such actions as: (1) protecting and restoring habitat; (2) identifying research needs and conducting research as needed to obtain new data to address priority problems; (3) monitoring estuarine conditions to detect changes in water quality and condition of ecosystem resources; and (4) providing technical assistance to States and local communities to address impacts from nutrient over-enrichment, stormwater, sedimentation, toxics, pathogens, and aquatic invasive species; to assess vulnerability from recurring extreme weather impacts; and to develop adaptation strategies and tools. Assistance agreement awards under this program may involve or relate to geospatial information. Further information regarding geospatial information may be obtained by viewing the following website: Geospatial Resources at EPA. Additionally, section 320 authorizes issuance of competitive assistance agreements to address urgent and challenging issues that threaten the ecological and economic well-being of coastal areas. Issues in coastal areas include: (1) Loss of key habitats resulting in significant impacts on fisheries and water quality such as seagrass, mangroves, tidal and freshwater wetlands, forested wetlands, kelp beds, shellfish beds, and coral reefs; (2) Recurring harmful algae blooms; (3) Unusual or unexplained marine mammal mortalities; (4) Proliferation or invasion of species that limit recreational uses, threaten wastewater systems, or cause other ecosystem damage; (5) Flooding and coastal erosion that may be related to sea level rise, changing precipitation, or salt marsh, seagrass, or wetland degradation or loss; (6) Impacts of nutrients and warmer water temperatures on aquatic life and coastal ecosystems, including low dissolved oxygen conditions in estuarine waters; and (7) Contaminants of emerging concern found in coastal and estuarine waters such as pharmaceuticals, personal care products, and microplastics. This program makes Federal awards on a discretionary basis. A discretionary award means an award in which the Federal awarding agency, in keeping with specific statutory authority that enables the agency to exercise judgement ("discretion"), selects the recipient and/or the amount of Federal funding awarded through a competitive process or based on merit of proposals. A discretionary award may be selected on a non-competitive basis, as appropriate. For further information, please contact the Headquarters or regional office.
- Length and time phasing of assistance
Assistance agreements are typically funded on a 12-month basis (yearly). Project period may cover up to 36 months, with continuations possible for certain types of projects. For IIJA agreements, funds remain until expended, allowing for extended project time frames when efficient.
How to apply
- Preapplication coordination
EPA financial assistance programs and activities subject to intergovernmental review that are subject to review under State single point of contact procedures are identified at https://www.epa.gov/grants/epa-financial-assistance-programs-subject-executive-order-12372-and-section-204. Applicants for programs or activities subject to Intergovernmental Review that are not subject to State single point of contact review must provide directly affected State, areawide, regional, and local entities at least 60 days to review their application following notification by EPA that the application has been selected for funding as provided by 40 CFR 29.8(a) and (c). Regarding pre-application assistance with respect to competitive funding opportunities under this assistance listing, EPA will generally specify the nature of the pre-application assistance, if any, that will be available to applicants in the competitive announcement. For additional information, contact the individual(s) listed in the NOFO. For noncompetitive base funding, all work plans should be developed in response to the priority tasks identified in the management conference annual work plan. Work plans should also be developed in response to negotiated schedules for commitments to meet the purpose of a management conference outlined in the Act for the estuary. Each work plan will be considered by the appropriate management conference and the appropriate EPA Regional Office.
- Criteria for selecting proposals
The evaluation and selection criteria for competitive awards under this assistance listing will be described in the NOFO.
- Award procedure
Each application is reviewed by EPA Regional Offices to determine the adequacy of the application under grant regulations and National Estuary Program objectives, including technical merit and relevance of the project. Awards are issued by the EPA Regional Offices after approval by the appropriate Division Director. For competitive awards, EPA will review and evaluate applications submissions in accordance with the terms, conditions, and criteria stated in the competitive announcement. Competitions will be conducted in accordance with EPA policies/regulations for competing assistance agreements. For non-competitive awards made under this assistance listing, EPA will conduct an administrative evaluation to determine the adequacy of the application in relation to grant regulations and to technical and program evaluation to determine the merit and relevance of the project. The Agency will then advise the applicant if funding is being considered. A final work plan will then be negotiated with the applicant. Applications are also assessed consistent with the merit review regulations in 2 CFR 200.205.
- Deadlines
Contact the headquarters (or regional office, as appropriate) for application deadlines. For competitive awards, deadlines will be specified in the Notice of Funding Opportunity (NOFO).
- Time to approval or disapproval
Approximately 90 days after deadline for application submission.
- Appeals
Assistance agreement competition-related disputes will be resolved in accordance with the dispute resolution procedures published in 70 FR (Federal Register) 3629, 3630 (January 26, 2005). Copies of these procedures may also be found at: https://www.epa.gov/grants/grant-competition-dispute-resolution-procedures. Disputes relating to matters other than the competitive selection of recipients will be resolved under 2 CFR 1500 Subpart E, as applicable.
Grant opportunities
| Opportunity | Status | Posted | Applications due |
|---|---|---|---|
| Fiscal Year (FY) 2021 Support of the National Estuary Program Watersheds Grant | Closed | ||
| FY 2018 Support of the National Estuary Program Coastal Watershed Grants | Closed |
Grant awards
Latest 10 of 707 listed here. See the rest on GovTribe.
Top recipients by federal obligations
| Rank | Recipient | Federal obligations | Share |
|---|---|---|---|
| 1 | Puget Sound Partnership | $105,283,551 | 16% |
| 2 | Energy & Environmental Affairs, Massachusetts Executive Office Of | $29,215,930 | 4% |
| 3 | Corporation For The Conservation Of The San Juan Bay Estuary | $18,087,124 | 3% |
| 4 | Hudson River Foundation For Science & Environmental Research Inc. | $17,808,341 | 3% |
| 5 | Association Of Bay Area Governments | $17,238,383 | 3% |
| 6 | Marine Environmental Sciences Consortium | $17,109,717 | 3% |
| 7 | Partnership For The Delaware Estuary, Inc. | $17,108,009 | 3% |
| 8 | Tampa Bay Estuary Program | $17,102,217 | 3% |
| 9 | Maryland Coastal Bays Foundation, Inc. | $17,096,139 | 3% |
| 10 | The Bay Foundation Of Morro Bay, California, San Luis Obispo County | $17,045,959 | 3% |
10 of 55 recipients listed here. See the rest on GovTribe.
Federal obligations by fiscal year
| Fiscal year | Federal obligations |
|---|---|
| FY2026 | $63,951,066 |
| FY2025 | $44,868,732 |
| FY2024 | $58,233,400 |
| FY2023 | $80,427,328 |
| FY2022 | $32,835,400 |
| FY2021 | $27,404,729 |
| FY2020 | $25,815,207 |
| FY2019 | $19,889,211 |
| FY2018 | $21,267,850 |
| FY2017 | $20,211,608 |
| FY2016 | $17,619,427 |
| FY2015 | $20,086,181 |
| FY2014 | $16,525,576 |
| FY2013 | $14,418,523 |
| FY2012 | $16,797,529 |
| FY2011 | $18,607,121 |
| FY2010 | $20,085,302 |
| FY2009 | $26,451,122 |
| FY2008 | $22,304,039 |
| FY2007 | $11,915,600 |
| FY2006 | $15,852,629 |
| FY2005 | $14,202,552 |
| FY2004 | $14,021,896 |
| FY2003 | $10,213,241 |
| FY2002 | $13,090,916 |
| FY2001 | $11,173,904 |
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Quick answers
What is Assistance Listing 66.456?
Assistance Listing 66.456 is National Estuary Program, a federal grant program run by Environmental Protection Agency.
What is the CFDA number for National Estuary Program?
Its CFDA number is 66.456: Assistance Listing numbers were called CFDA numbers before 2018.
How much funding has Assistance Listing 66.456 awarded?
707 grant awards under 66.456 have obligated $658,688,091 in federal funds to 55 recipients.
Who receives the most funding from 66.456?
The recipients obligated the most under National Estuary Program are Puget Sound Partnership ($105,283,551), Energy & Environmental Affairs, Massachusetts Executive Office Of ($29,215,930) and Corporation For The Conservation Of The San Juan Bay Estuary ($18,087,124).
How much did 66.456 obligate in fiscal year 2025?
Grants under 66.456 obligated $44,868,732 in federal funds in fiscal year 2025.
Are there open grant opportunities under 66.456?
No opportunity listed under 66.456 is open now. The latest, Fiscal Year (FY) 2021 Support of the National Estuary Program Watersheds Grant, was posted on September 24, 2021.
On GovTribe
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