Assistance Listing 66.456
National Estuary Program
ENVIRONMENTAL PROTECTION AGENCY
Assistance Listing 66.456, “National Estuary Program,” is a federal program administered by ENVIRONMENTAL PROTECTION AGENCY. It provides grant assistance. GrantsJunction currently tracks 0 open, 0 forecasted and 0 closed opportunities under this listing. The agency reported $44.9M in obligations for fiscal year 2025.
- Likely formula or pass-through fundingThis program obligates substantial funding but has no competitive notices in our Grants.gov records. Funds like these are often distributed by formula or through state agencies — contact your state's administering agency about sub-awards. calculated by GrantsJunction
- Funding down 24% (FY24→FY25)Actual obligations reported in the SAM.gov listing changed -24% from FY2024 to FY2025. Historical data, not a prediction. calculated by GrantsJunction
Program 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 significance, or NEPs, use an ecosystem-based management approach to help achieve their protection and restoration goals. For example, each NEP characterizes the priority problems in its estuary and surrounding watershed, develops a long-term plan known as a Comprehensive Conservation and Management Plan (CCMP) that identifies actions to address those problems, and identifies partners, including lead entities, who will implement those actions. Implementation of CCMPs can include the following actions: protecting and restoring habitat, including wetlands; supporting water quality protection and restoration, including Total Maximum Daily Load (TMDL) plan implementation; monitoring for, assessing the extent of toxics loadings and pathogen contamination, and taking steps to address excess loadings and contamination; implementing stormwater management, reducing non-point source pollution impacts, and promoting the adoption of green infrastructure approaches; preventing the spread of aquatic invasive species and/or managing their impacts; developing and implementing nutrient reduction strategies; conducting vulnerability assessments and developing and implementing adaptation strategies for recurring extreme weather, and using adaptation tools to promote coastal resilience. In addition to CCMP implementation, NEPs and other eligible recipients, address urgent and challenging issues that threaten the ecological and economic well-being of coastal areas. EPA's funding priority is to award assistance agreements that support the 28 National Estuary Programs' (NEPs) efforts to address their estuarine watersheds' priority problems identified in each of the 28 long-term CCMPs. EPA will provide focused support for NEPs to address priority problems identified by NEP management conferences and to document accomplishments and environmental results. NEP efforts address such problems as: (1) impacts on estuarine water quality and living resources of nutrients, toxics (chemical, heavy metals), pathogen contamination, and sediment attributable to excess loadings and non-point stormwater runoff; e.g., excess nutrient loadings can result in nutrient over-enrichment and hypoxic conditions in estuarine water bodies; (2) habitat loss/degradation; (3) risks to CCMP implementation due to recurring extreme weather impacts, and adaptation strategies to build regional, local, and tribal officials' capacity to address impacts from recurring extreme weather on NEP watersheds, and to promote community resilience. Activities that build capacity include conducting vulnerability assessments and developing and implementing adaptation strategies and programs; and 4) need for decision makers in estuarine communities to implement sustainable land use, green infrastructure, and low-impact development best practices.
As published in the SAM.gov Assistance Listing.
Current opportunities under 66.456
No open or forecasted opportunities are currently posted under this listing. Programs often post notices on an annual cycle — see recently closed opportunities below for timing.
Eligible applicants (program level)
- Other
- U.S. State Government (including the District of Columbia)
- Interstate Organization
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.
Intended beneficiaries: Unrestricted by Individual Type and Unrestricted by Entity Type.
Program-level eligibility from SAM.gov. Each funding notice sets its own requirements.
Reported obligations by fiscal year
Historical data · not a predictionRange and average of financial assistance (from the listing): For FY 2024, each of the NEPs received base funding of $850,000 and the NEP Coastal Watersheds Grant total amount was $3,500,000. For FY 25, each of the NEPs are estimated to receive base funding of $700,000.
Source: SAM.gov Assistance Listing 66.456. Hatched bars are agency estimates. These totals do not indicate approval rates.Who gets funded
Historical data · not a predictionGrant obligations by fiscal year
Source: USAspending.gov (grants and cooperative agreements, award types 02–05), refreshed weekly. Names and amounts are as reported by agencies and prime recipients. Past recipients show where money went — not who is eligible or how likely an application is to succeed.
Frequently asked questions
What is ALN 66.456?
66.456 is the Assistance Listing Number for “National Estuary Program.” Assistance Listing Numbers (formerly CFDA numbers) identify federal assistance programs; individual grant opportunities reference the listing they are funded under.
Who can apply under ALN 66.456?
The SAM.gov listing names these applicant types: Other, U.S. State Government (including the District of Columbia) and Interstate Organization. Each funding notice under the program sets its own eligibility, so check the specific opportunity.
How much funding does 66.456 provide?
The agency reported $44,868,732 in obligations for FY2025 in the SAM.gov Assistance Listing. These are program-wide totals reported by the agency, not a prediction of future awards.