Oceanfarmr ESG
Oyster Lease
ESG Asset Attribution
Framework
A science-based platform for quantifying the ecosystem service value of US oyster aquaculture leases — nitrogen removal, carbon sequestration, and habitat provision — aligned with TNFD LEAP, GRI 304, and SEEA EA standards.
Platform Coverage
Active Leases
4,793
Virginia + Maine
Total Acreage
133,145 ac
Active polygon leases
Combined ESV
$80.5M/yr
Tier 1 · DAF-adjusted
N Removed
~3,200 t/yr
Nitrogen removal estimate
ESV Service Vectors
Disclaimer: The ESV estimates presented in this tool are indicative only. They are derived from Tier 1 (area-based) calculations using published unit values for nitrogen removal, carbon sequestration, and habitat provision, adjusted by a Data Adequacy Factor (DAF) reflecting data quality and confidence. They do not constitute verified environmental credits, regulatory compliance values, or financial instruments. Values should not be used for investment decisions without independent verification. The NOAA-TDC Dual-Flow Framework is a research tool designed to support ESG reporting alignment with TNFD LEAP, GRI 304, and SEEA EA standards.
Regions — Lease List View
Tools & Documentation
Virginia
Chesapeake Bay
Virginia MRC private oyster leases across Chesapeake Bay growing areas, enriched with CBP water quality data.
Leases
4,635
Acres
131,614
ESV/yr
$79.7M
Maine
Gulf of Maine
Maine DMR polygon leases with satellite-derived growth data (Kiffney et al. 2026) for the validated Casco Bay / Midcoast area.
Leases
158
Acres
1,531
ESV/yr
$800k
Lease Explorer
Browse all active leases across Virginia and Maine on an interactive map. Filter, sort, and click any lease polygon to open the full ESV detail panel with nitrogen removal, carbon sequestration, and habitat values.
ESV Calculator
Estimate the ecosystem service value of an individual oyster lease using the NOAA-TDC Dual-Flow Framework. Enter lease area, cultivation method, and water quality context to generate a Tier 1 ESV estimate.
Methodology
Full documentation of the NOAA-TDC Dual-Flow Framework — four ESV vectors, REDQS scoring, DAF adjustment, and alignment with TNFD LEAP, GRI 304, and SEEA EA. Includes Maine satellite growth data integration.
About
Project background, data sources, research partners, and the roadmap for expanding the ESG attribution model to additional US oyster-producing states including Washington, Oregon, and Louisiana.
Partners & Supporters
© 2026 NOAA-TDC · Dual-Flow ESG Asset Attribution Framework · v2026