Mcglynn Reservoir dam
Mcglynn Reservoir
Mcglynn Reservoir, located in Richland County, Montana, serves as a crucial water source for irrigation purposes in the region. With a maximum storage capacity of 412 acre-feet and a normal storage level of 261 acre-feet, the reservoir covers a surface area of 30.4 acres and has a drainage area of 3.6 square miles. Completed in 1939, the earth dam stands at a height of 26 feet and has a hydraulic height of 21.5 feet, providing essential water resources for agricultural activities in the area.
Managed by a private owner, Mcglynn Reservoir is regulated by the Montana Department of Natural Resources and Conservation (DNRC), ensuring compliance with state permitting, inspection, and enforcement procedures. Despite its low hazard potential, the dam's condition assessment is currently marked as "Not Rated," indicating a need for further evaluation to ensure the safety and stability of the structure. With a primary purpose of irrigation, the reservoir plays a vital role in sustaining water availability for local farmers and supporting agricultural productivity in the region.
Situated along the TR-Bennie Peer Creek, Mcglynn Reservoir not only contributes to water resource management but also enhances the overall environmental and economic sustainability of the area. As climate change continues to impact water availability and quality, the efficient operation and maintenance of this reservoir are essential for ensuring a reliable water supply for agricultural activities and mitigating the effects of changing climatic conditions in the region.
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 Mcglynn Reservoir -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Yellowstone River Near Sidney Mt | 17,300 cfs | → |
| Charbonneau Creek Nr Charbonneau | 0 cfs | → |
| Beaver Creek Nr Trotters | 2 cfs | → |
| Missouri River Near Culbertson Mt | 5,370 cfs | → |
| Little Missouri River Nr Watford City | 41 cfs | → |
| Big Muddy Cr Nr Mouth Nr Culbertson Mt | 11 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mcglynn Reservoir.
Campgrounds
- Seven Sisters Fas
- Sather Lake
- Sather Lake Recreation Area
- Sharbano City Park
- Sundheim Park
- Fort Buford State Historic Site
Paddle runs
- Southern Boundary Of The Elkhorn Unit Of Theodore Roosevelt National Park To Northern Boundary Of The Elkhorn Unit Of Theodore Roosevelt National Park
- Southern Boundary Of The South Unit Of Theodore Roosevelt National Park To Northern Boundary Of The South Unit Of Theodore Roosevelt National Park
Track Mcglynn Reservoir 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 Mcglynn Reservoir
Where does the data for Mcglynn Reservoir 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 Low 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 Mcglynn Reservoir.