Holter Dam is a hydroelectric straight gravity dam on the Missouri River about 45 miles (72 km) northeast of Helena, Montana, in the United States.[3] The dam, which was built between 1908 and 1918, is 1,364 feet (416 m) long and 124 feet (38 m) high.[1][3] The reservoir formed by the dam, Holter Lake (also known as Holter Reservoir) is 25 miles (40 km) long and has a storage capacity of 243,000 acre feet (300,000,000 m3) of water when full.[4] The dam is a "run-of-the-river" dam because it can generate electricity without needing to store additional water supplies behind the dam
Holter Reservoir
| Size: | 3666.94 acres |
| Elevation: | 3598.16 ft |
| Status of the Fishery: | Holter Reservoir is a popular year-round fishery for rainbow trout, walleye and yellow perch. In addition, kokanee salmon can be targeted primarily in deeper water near the dam. |
| Township/Range/Section: | 14N 3W 27 |
| Latitude/Longitude: | 46.93494 -111.96336 |
| FWP Region: | Region 4 |
| County: | Lewis & Clark |
| Fishing District: | Central |
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| Waterbody | Section | Field Form Type | Date | Purpose | Species |
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To see this data, first select one or more rows from the Collection Info tab.
For Comparative analysis all Length Units are millimeters : all Weights are grams
| Species | Count | Avg | StdDev | Min | Max | AvgWgt | StdDevWgt | MinWeight | S/L | Sects | Surveys | Waterbody |
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To see this data, first select one or more rows from the Collection Info tab.
For Comparative analysis all Length Units are millimeters : all Weights are grams
| Waterbody | Section | Species | Count | AveLength | StdDevLength | MinLength | MaxLength | AveWeight | StdDevWeight | MinWeight | MaxWeight |
|---|
To see this data, first select one or more rows from the Collection Info tab.
For Comparative analysis all Length Units are millimeters : all Weights are grams
| Waterbody | Year | Section | Species | Count | AveLength | StdDevLength | MinLength | MaxLength | AveWeight | StdDevWeight | MinWeight | MaxWeight |
|---|
To see this data, first select one or more rows from the Collection Info tab.
This is a preview, all fields will be visible by selecting a download option. For Comparative analysis all Length Units are millimeters : all Weights are grams.
| Year | Species Abbrv | Length | Weight | M/C | Count | Sex | Mort | Hook Scar | Disease | Scales | Otolith | Fin Clip | Tag | Comment | Genetics | Age | Stomach | Intercept | Slope | Gear | Equipment | Trip | Date | Pass/Run | Water | Section | Lat/Down | Lon/Down | Lat/Up | Lon/Up | Agency | Start Depth | End Depth |
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| Year | Angler Days | Std. Error |
|---|---|---|
| 2021 | 53427 | 6160 |
| 2020 | 50672 | 5016 |
| 2019 | 52786 | 5233 |
| 2017 | 96091 | 9779 |
| 2015 | 90470 | 6409 |
View the latest Montana Fishing Regulations.
No Gauging Stations found.
This waterbody has a fish consumption advisory. Please see the link for guidelines.
Fish Consumption Guidelines (PDF)
