Hillside (Lake) dam
Hillside (Lake)
Hillside (Lake) is a significant water resource located in Lake, Montana, with a storage capacity of 95 acre-feet and a dam height of 30 feet. The dam was completed in 1940 under the supervision of the DOI BIA. Despite not being state-regulated, Hillside (Lake) has a significant hazard potential, highlighting the importance of proper monitoring and maintenance to ensure its structural integrity.
Although specific details about the dam's purpose, design, and construction are not available, its location within the Seattle District suggests its importance for water management in the region. With a lack of recent inspection data and condition assessment, it is crucial for water resource and climate enthusiasts to advocate for comprehensive monitoring and emergency preparedness measures to mitigate potential risks associated with the dam. Furthermore, engaging with federal agencies and local stakeholders to ensure the dam's safety and compliance with guidelines is essential for the long-term sustainability of Hillside (Lake) as a vital water resource.
As a site with limited information available, Hillside (Lake) presents an opportunity for further research and engagement by water resource and climate enthusiasts. By advocating for regular inspections, emergency preparedness measures, and risk management strategies, stakeholders can contribute to the preservation and sustainable use of this important water resource in Montana. Additionally, collaboration with federal agencies and local communities can help ensure the safety and integrity of Hillside (Lake) for current and future generations.
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 Hillside (Lake) -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| South Crow Creek Near Ronan Mt | 9 cfs | → |
| Mission Cr Ab Reservoir Nr St Ignatius Mt | 68 cfs | → |
| Flathead River At Perma Mt | 25,400 cfs | → |
| Flathead River Near Polson Mt | 24,700 cfs | → |
| South Fork Jocko River Near Arlee Mt | 191 cfs | → |
| Clark Fork Near Plains Mt | 38,700 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Hillside (Lake).
Boat launches
- Point Salish Park
- South Holland Lake Road 232, 59826 Montana
- Southside Road Missoula County
- Elmo Fishing Access
Campgrounds
- North Crow Creek
- Kreis Pond
- Kreis Pond Campground
- Lindbergh Lake Campground
- Lindbergh Lake
- Finley Point State Park
Fishing spots
- Blacktail Lake
- Petty Creek Fishing Access
- St. John's Fishing Access Site
- Lake Alva
- Deep Creek Fishing Access
- Tarkio Fishing Access
Paddle runs
- Cuttoff, Sec. 9, T18n, R27w To Sec. 34, T19n, R25w
- Wrangle Creek Headwaters, Sec. 18, T15n, R18w To Mainstem, Sec. 21, T15n, R18w
- Alberton Gorge (St. John To Forrest Grove)
- Lake Creek Headwaters, Sec. 30, T15n, R18w To Mainstem, Sec. 21, T15n, R18w
- High Falls Creek Headwaters, Sec. 5, T14n, R18w To Mainstem, Sec. 2, T14n, R18w
- Spring Gulch Headwaters, Sec. 12, T14n, R19w To Mainstem, Sec. 35, T14n, R19w
More reservoirs
Track Hillside (Lake) 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 Hillside (Lake)
Where does the data for Hillside (Lake) 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 Significant 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 Hillside (Lake).