Hinman Dam dam
Hinman Dam
Hinman Dam, located in the Lewis and Clark County of Montana, stands as a vital structure along the Beartooth Creek. Completed in the year 2000, this earth dam reaches a height of 34 feet and a length of 216 feet, providing a storage capacity of 21 acre-feet. The dam serves a primary purpose of "Other," indicating its role in water resource management and climate regulation in the region.
As a state-regulated and state-jurisdictional dam under the supervision of the Department of Natural Resources and Conservation (DNRC), Hinman Dam is subject to regular inspections and enforcement measures to ensure its safety and functionality. With a hazard potential rated as "High," the dam's condition assessment remains "Not Rated," highlighting the need for continued monitoring and risk management. The dam's emergency action plan (EAP) status and risk assessment information are currently unavailable, emphasizing the importance of preparedness and proactive measures in the face of potential hazards.
Despite its relatively small size, Hinman Dam plays a critical role in the local water supply and environmental conservation efforts. As climate change continues to impact water resources, the proper maintenance and management of dams like Hinman are essential for safeguarding communities and ecosystems against the challenges of a changing climate.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Hinman Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Missouri River Bl Holter Dam Nr Wolf Cr Mt | 3,330 cfs | → |
| Missouri River Bl Hauser Lake Nr Helena Mt | 3,320 cfs | → |
| Little Prickly Pear Cr At Wolf Cr Mt | 90 cfs | → |
| Tenmile Creek Near Helena Mt | 42 cfs | → |
| Dearborn River Near Craig Mt | 298 cfs | → |
| Prickly Pear Creek Near Clancy Mt | 40 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Hinman Dam.
Boat launches
- Log Gulch Boat Ramp
- Holter Lake Boat Ramp
- Beartooth Road Lewis And Clark County
- Holter Dam Boat Ramp
- Hauser Dam Road Helena Valley Northeast
- White Sandy Boat Ramp
Campgrounds
Fishing spots
- Little Prickly Pear Creek
- Missouri River Fishing Access Site
- Prickly Pear Creek
- Silver Creek
- Hauser Reservoir
- Helena Valley Regulating Reservoir
Track Hinman Dam in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Hinman Dam
Where does the data for Hinman Dam come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the High hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Hinman Dam.