|
Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
36808
| MT | | Beaver drainage | 1980 |
10050014
| Beaver | established |
36624
| MT | | Little Missouri drainage | 1971 |
10110201
| Upper Little Missouri | established |
36818
| MT | | lower Big Horn | 1990 |
10080015
| Lower Bighorn | established |
36805
| MT | | lower Milk drainage | 1980 |
10050012
| Lower Milk | established |
36821
| MT | | lower Musselshell drainage | 1990 |
10040205
| Lower Musselshell | established |
36464
| MT | | Marias River | 1990 |
10030203
| Marias | established |
36807
| MT | | middle Milk drainage | 1980 |
10050004
| Middle Milk | established |
36822
| MT | | middle Musselshell drainage | 1990 |
10040202
| Middle Musselshell | established |
36757
| MT | | Missouri drainage, upper | 1990 |
10030100
| Upper Missouri | established |
36463
| MT | | Missouri River from ND state line to Canyon Ferry Lake | 1990 |
| Missouri Region | established |
36809
| MT | | Missouri River, above Fort Peck Reservoir | 1980 |
10040104
| Fort Peck Reservoir | established |
36811
| MT | | Missouri River, upper | 1980 |
10030102
| Upper Missouri-Dearborn | established |
36804
| MT | | Muddy drainage | 1980 |
10060006
| Big Muddy | established |
36756
| MT | | Musselshell (HUC6) non-specific | 1990 |
10040200
| Musselshell | established |
36449
| MT | | Tongue River | 1990 |
10090101
| Upper Tongue | established |
36816
| MT | | Tongue River, lower | 1990 |
10090101
| Upper Tongue | established |
36819
| MT | | upper Big Horn | 1990 |
10080010
| Big Horn Lake | established |
36810
| MT | | upper Milk drainage | 1980 |
10050002
| Upper Milk | established |
36815
| MT | | Yellowstone drainage, upper | 1990 |
10070000
| Upper Yellowstone | established |
36755
| MT | | Yellowstone drainage, upper | 1990 |
10070000
| Upper Yellowstone | established |
36834
| MT | | Yellowstone River from ND state line to Billings | 1990 |
10070007
| Upper Yellowstone-Pompeys Pillar | established |
36814
| MT | | Yellowstone River, lower | 1990 |
10070007
| Upper Yellowstone-Pompeys Pillar | established |
36813
| MT | | Yellowstone River, lower | 1990 |
10070007
| Upper Yellowstone-Pompeys Pillar | established |
36817
| MT | | Yellowstone River, upper, near state line | 1990 |
10100004
| Lower Yellowstone | established |
36459
| MT | | Big Horn River drainage | 1990 |
10080000
| Big Horn | established |
|