Westervelt is a mitigation and conservation bank operator with a portfolio of 32 banks across 11 states (Alabama, California, Colorado, Georgia, Idaho, Mississippi, Montana, Nebraska, South Carolina, South Dakota, Tennessee). They break down as 23 approved, 6 pending, 3 sold-out. 21 banks currently list available credits. Its banks are regulated by the USACE Charleston, Mobile, Nashville, Omaha, Sacramento, Savannah and Walla Walla districts. They sit in 41 counties, among them Alameda, Amador and Bibb. The portfolio includes Big Gun Conservation Bank, Bullock Bend Mitigation Bank and Bumpus Mills Mitigation Bank. At least 25 sales are recorded across these banks since September 2025.
—no unit recorded — Mixed · Group: Salmonid/Riverine Riparian/SWHA Nest Buffer (Re-established)—no unit recorded — Mixed · Group: Salmonid/Riverine Riparian (Re-established)—no unit recorded — Mixed · Group: Salmonid/Floodplain Riparian/SWHA Nest Buffer (Enhanced)—no unit recorded — Mixed · Group: Salmonid/Floodplain Riparian/SWHA Nest Buffer (Re-established)—no unit recorded — Mixed · Group: Salmonid/Riverine Riparian (Enhanced)—no unit recorded — Species · Salmonid—no unit recorded — Species · Swainson's Hawk Nesting Tree Use (Enhanced)
—no unit recorded — Wetland · Floodplain Mosaic Wetland (404)—no unit recorded — Wetland · Floodplain Riparian—no unit recorded — Stream · Riparian (CDFW - Enhancement)—no unit recorded — Stream · Shaded Riverine Aquatic PreservationRatio — Stream · Perennial Stream
Species · Swainson's hawk (SWHA)Species · Group: Vernal Pool Preservation (VPTS + VPFS)Mixed · Group: Vernal Pool Establishment (404/ESA)
173.599 — Species · Swainson's hawk (SWHA)14.42 — Species · Group: Vernal Pool Preservation (VPTS + VPFS)1.191 — Mixed · Group: Vernal Pool Establishment (404/ESA)
—no unit recorded — Species · Swainson's hawk (SWHA)—no unit recorded — Species · Group: Vernal Pool Preservation (VPTS + VPFS)—no unit recorded — Mixed · Group: Vernal Pool Establishment (404/ESA)
—no unit recorded — Mixed · Group: Freshwater Marsh Complex (non-SRA)—no unit recorded — Mixed · Group: Freshwater Marsh Complex (SRA)—no unit recorded — Mixed · Group: Buffer
Withdrawals recorded in the RIBITS ledger — the credits these banks sold to offset permitted impacts. The buyer is not shown: ledger use here is deliberately restricted to the existence, quantity and date of a transaction.
Bank details, status and credit balances are mirrored from the USACE RIBITS registry, the federal public record for mitigation banks. Credit classes offset different resources and are never added together. Totals across many banks are rounded to whole credits — a single bank’s own balance never is. What we call a “credit sale” is a credit withdrawal — the entry written in the federal credit ledger when credits are committed to a permit. At commercial banks a withdrawal generally represents a sale; at a single-client bank it offsets the sponsor’s own project. The figures count ledger transactions, not distinct purchases — one purchase may produce several withdrawals — and we count entries rather than credits moved, because credit classes are different units and cannot be added together. Each bar in a sales chart counts the credit sales recorded in that calendar year — withdrawals from the federal ledger, not quantities of credits. The final bar is the year in progress and is shown in a different color. No bars means no sales in those years.
The operator grouping is ours, not from RIBITS. The federal registry records a sponsor for each bank but lists no parent company. We identify operators by matching sponsor names and contact details across bank records, reviewed by hand. We only display operators with at least five banks.
“Recent sales” covers the last twelve months. A map of pins shows where banks and sites are, not where they can sell. Service areas are wider than the pin and are decided by the Corps — open a bank, or run a location search, to see the area it actually covers. The map on this page is drawn live from the EPA NEPAssist RIBITS MapServer when you load it.