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South Dakota · EPA ECHO (national)
Powder House Pass CID SSCS
Permit SD0028615
—
No waterway impact reported
Reported events
4
Total volume
3K gal
Reached waterways
0 (0%)
Reporting since
2023
What caused the overflows
Equipment Failure
2
Rainfall / Flooding
1
Other / Unknown
1
Reported overflow events (showing 4 of 4)
| Date | Volume | Cause | Reached water | Receiving water |
|---|---|---|---|---|
| Dec 31, 2023 | 2K gal | Rainfall / Flooding | — | NA |
| Nov 7, 2023 | 10 gal | Other / Unknown | — | NA, all water was filtered before discharged. |
| Oct 31, 2023 | 900 gal | Equipment Failure | — | Excavated hole. No waterbody. |
| May 20, 2023 | 1K gal | Equipment Failure | — | Unnamed tributary of Whitewood Creek |
Source: EPA ECHO (national). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.