Programs › 66.456

Assistance listing · 66.456

National Estuary Program

Federal financial assistance obligated under listing 66.456, the organisations that receive it and where it goes.

USAspending caveat. Figures are obligations reported by federal agencies to USAspending.gov, not payments. In USAspending's words: "An outlay occurs when federal money is actually paid out, not just promised to be paid ('obligated')." "Every agency has a Senior Accountable Official who must officially certify that the quarterly financial data submitted by their agency is accurate and complete." "If there are any discrepancies in procurement data, FPDS is the authoritative source." Contract data for the Department of Defense and the U.S. Army Corps of Engineers is published with a 90-day delay. Data loaded 30 Sep 2026.

Obligations by fiscal year

Compared with the largest program FY2026

Largest recipients $1.0M+ award value since FY2023

Largest awards since FY2023

Other programs numbered 66.xxx

• 66.468 Drinking Water State Revolving Fund $26B
• 66.458 Clean Water State Revolving Fund $15B
• 66.957 Greenhouse Gas Reduction Fund: National Clean Investment Fund $14B
• 66.959 Greenhouse Gas Reduction Fund: Solar for All $7.0B
• 66.960 Greenhouse Gas Reduction Fund: Clean Communities Investment Accelerator $6.0B
• 66.046 Climate Pollution Reduction Grants $4.9B
• 66.442 Water Infrastructure Improvements for the Nation Small and Underserved Communities Emerging Contaminants Grant Program $3.3B
• 66.051 Clean Ports Program $2.9B
• 66.045 Clean School Bus Program $2.8B
• 66.202 Congressionally Mandated Projects $2.7B
• 66.605 Performance Partnership Grants $1.9B
• 66.616 Environmental and Climate Justice Community Change Grants Program $1.5B
• 66.818 Brownfields Multipurpose, Assessment, Revolving Loan Fund, and Cleanup Cooperative Agreements $898M
• 66.600 Environmental Protection Consolidated Grants for the Insular Areas - Program Support $663M
• 66.615 Environmental Justice Thriving Communities Grantmaking Program (EJ TCGM) $660M
• 66.049 Clean Heavy-Duty Vehicles Program $630M
• 66.460 Nonpoint Source Implementation Grants $439M
• 66.034 Surveys, Studies, Research, Investigations, Demonstrations, and Special Purpose Activities Relating to the Clean Air Act $415M
• 66.817 State and Tribal Response Program Grants $383M
• 66.469 Geographic Programs - Great Lakes Restoration Initiative $373M
• 66.802 Superfund State, Political Subdivision, and Indian Tribe Site-Specific Cooperative Agreements $365M
• 66.001 Air Pollution Control Program Support $306M
• 66.801 Hazardous Waste Management State Program Support $290M
• 66.419 Water Pollution Control State, Interstate, and Tribal Program Support $257M

Questions and answers

Provenance

Source: USAspending.gov API v2, spending by category (assistance listing) by fiscal year, recipient cross-tabulation for FY2022–FY2025 and award search, loaded 30 Sep 2026. State figures come from each state's top-100 listing table, so small amounts in a state may be missing. See methodology.