Carrier profile · USDOT 456981 · Updated Jun 13, 2026
East River Electric Power Cooperative Inc
66 power unitsLocal · 2 statesMADISON, SD50/100
AUTHORITY STATUS UNKNOWNHAZMAT
Identity & Federal
The official FMCSA identity — legal name, DBA, addresses, contact, officers, and registration — alongside the daily-captured federal-record activity feed, monitored daily by Vektor.
Location
- Physical address
- 211 S HARTH AVE, MADISON, SD, 57042-0227
- Mailing address
- PO BOX 227, MADISON, SD, 57042-0227
- Operation
- Interstate· Hazmat
Contact
- Phone
- (605) 256-4536
- Fax
- (605) 256-8058
- Web domain
- eastriver.coop
Registration
- Officers
- Nicholas Reiff · Barbara Strom
- USDOT / docket
- 456981
- First registered
- Aug 29, 1991
- Last MCS-150
- Jan 7, 2026 · 772,000 mi (2025)
- FMCSA safety rating
- Not rated
- D-U-N-S
- 8941882
Fleet (self-reported · MCS-150)
MCS-150 filing history· biennial-update cadence
Per-filing MCS-150 history (each biennial update + the fleet/mileage it reported) is being captured from the daily federal feed and will appear here as we capture the full history.
Federal record activity· monitored daily by Vektor
No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.