Long Lake dam
Long Lake
Long Lake in Hubbard, Minnesota, is a state-regulated body of water with a dam completed in 1949 by the Minnesota Department of Natural Resources. This Earth dam, standing at 25 feet high and 150 feet long, serves multiple purposes, including flood control and water storage. With a maximum storage capacity of 57,753 acre-feet and covering an area of 1,863 acres, Long Lake plays a crucial role in managing water resources in the region.
The dam's spillway, controlled in nature, can handle a maximum discharge of 1,000 cubic feet per second, minimizing the risk of flooding in the area. Despite its low hazard potential and satisfactory condition assessment, Long Lake is subject to regular inspections every 8 years to ensure its structural integrity and operational efficiency. With a very high risk assessment rating of 1, Long Lake remains a key feature in the local water resource management system, providing crucial support to the surrounding ecosystem and communities.
Situated on Shell River, Long Lake offers a picturesque setting for water resource and climate enthusiasts to explore the intersection of human infrastructure and natural landscapes. With its history dating back to the mid-20th century and ongoing state regulation, this body of water embodies the delicate balance between conservation and development in the face of changing environmental conditions. As a significant feature in the St. Paul District of Minnesota, Long Lake continues to play a vital role in the region's water management efforts, highlighting the importance of sustainable practices in safeguarding our natural resources for 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 Long Lake -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Straight River Near Park Rapids | 46 cfs | → |
| Crow Wing River At Nimrod | 343 cfs | → |
| Mississippi River Near Bemidji | 217 cfs | → |
| Crow Wing River Near Pillager | 1,120 cfs | → |
| Mississippi River At Brainerd | 2,380 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Long Lake.
Boat launches
- County 109 Hubbard County
- 1st Street Southwest Menahga
- Grouse Road 19800, Hubbard County
- Mill Avenue Osage
- Hubbard County
- Ten Mile Access Road Cass County
Campgrounds
- Huntersville Sf - Shell City Landing
- Shell City Landing - Huntersville State Forest
- Hunterville Township Campsite
- Huntersville Township
- Tree Farm Landing County Campgrounds
- Memorial Forest Park - Menahga
Fishing spots
Track Long 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 Long Lake
Where does the data for Long 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 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 Long Lake.