Hydrological Unit: Willow
| Site number | Name | Site type |
|---|---|---|
| 13057400 | GRAYS LAKE NR WAYAN ID | Lake, Reservoir, Impoundment |
| 13057500 | GRAYS LAKE OUTLET NR HERMAN ID | Stream |
| 13057600 | HOMER CREEK NR HERMAN ID | Stream |
| 13057910 | UNNAMED TRIBUTARY TO WILLOW CREEK NR AMMON ID | Stream |
| 13057930 | WILLOW CREEK AB RIRIE LAKE NR OZONE ID | Stream |
| 13057940 | WILLOW CREEK BL TEX CREEK NR RIRIE ID | Stream |
| 13057946 | MEADOW CREEK NR RIRIE ID | Stream |
| 13057950 | RIRIE LAKE NR RIRIE ID | Lake, Reservoir, Impoundment |
| 13058000 | WILLOW CREEK NR RIRIE ID | Stream |
| 13058530 | WILLOW CREEK BLW FLOODWAY CHANNEL NR UCON ID | Stream |
| 425710111232101 | 05S 43E 26CBB1 | Well |
| 425734111221201 | 05S 43E 25BBD1 | Well |
| 425753111241901 | 05S 43E 22CDB1 | Well |
| 425810111221601 | 05S 43E 24CBB1 | Well |
| 425858111254501 | 05S 43E 16CBB1 | Well |
| 425957111232601 | 05S 43E 11BCC1 | Well |
| 430012111232701 | 05S 43E 11BCB1 | Well |
| 430150111223601 | 04S 43E 35ADB1 | Well |
| 430154111221501 | 04S 43E 36BCB1 | Well |
| 430214111223901 | 04S 43E 26DCD1 | Well |
| 430259111221201 | 04S 43E 25BBB1 | Well |
| 430703111232201 | 03S 43E 35BCB1 | Well |
| 430732111304001 | 03S 42E 27DAD1 | Well |
| 430939111333301 | 03S 42E 17BDA1 | Well |
| 430948111270501 | 03S 43E 18AAD1 | Well |
| 430957111284401 | 03S 42E 12DCC1 | Well |
| 431118111390201 | 03S 41E 04ADD1 | Well |
| 431235111294001 | 02S 42E 26DCD1S | Spring |
| 431625111463301 | 02S 40E 04CAA1 | Well |
| 431647111365101 | 02S 41E 02ACA1 | Well |
| 431753111464101 | 01S 40E 28CDC1 | Well |
| 431825111445101 | 01N 40E 03ADD1 | Well |
| 432121111473801 | 01S 40E 05CDD1 | Well |
| 432237111483001 | 01N 39E 36AAC1 | Well |
| 432319111433101 | 01N 40E 26BCC1 | Well |
| 432438111500101 | 01N 39E 14DCC1S BAGGER CREEK SP. | Spring |
| 432632111400301 | 01N 41E 06DAD1 | Well |