Clean Water Act discharge permit · NPDES MTR104018
CLARK CANYON HYDRO - CLARK CANYON DAM HYDROELECTRIC FACILITY, Dillon, MT: NPDES MTR104018 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
CLARK CANYON HYDRO - CLARK CANYON DAM HYDROELECTRIC FACILITY, held by CLARK CANYON HYDRO LLC, holds NPDES permit MTR104018, which discharges to Beaverhead River. EPA’s file records it issued February 17, 2011 and expiring December 31, 2011. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
What the register holds for CLARK CANYON HYDRO - CLARK CANYON DAM HYDROELECTRIC FACILITY: its NPDES ID, its permit type and status, its dates, its address in Dillon, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR104018.
Identity
| Facility as filed | CLARK CANYON HYDRO - CLARK CANYON DAM HYDROELECTRIC FACILITY |
|---|---|
| Permittee as filed | CLARK CANYON HYDRO LLC |
| NPDES ID | MTR104018 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Construction stormwater |
| Issued | February 17, 2011 |
| Expiration date | December 31, 2011 |
| Issuing agency | MONTANA DEQ |
| Address | Dillon, MT 59725 |
| Receiving water | BEAVERHEAD RIVER |
| Subwatershed | Beaverhead River-Henneberry Creek (HUC 100200020402) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES MTR104018.
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MTR104018.
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MTR104018.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MTR104018 there.
Nearby on the register
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- Every permit record in Montana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.