Lake Hattie dam
Lake Hattie
Lake Hattie, located in Cass County, Minnesota, is a state-regulated reservoir with a primary purpose classified as "Other." The dam, completed in 1937, is a gravity type structure with a height of 10 feet and a length of 55 feet. The reservoir has a maximum storage capacity of 8,168 acre-feet and a normal storage capacity of 6,716 acre-feet, covering a surface area of 484 acres.
The reservoir is situated on the Pine River, with a drainage area of 85.3 square miles and a maximum discharge capacity of 2,600 cubic feet per second. Despite its low hazard potential and satisfactory condition assessment, the dam undergoes inspections every 8 years to ensure its safety and integrity. Lake Hattie serves as a vital water resource for the region, supporting various ecological functions and providing recreational opportunities for residents and visitors alike.
With its scenic location and important role in water management, Lake Hattie is a significant asset in the St. Paul District of Minnesota. The reservoir's historical significance, coupled with its functional design and regulatory oversight, makes it a noteworthy site for water resource and climate enthusiasts to explore and appreciate.
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 Lake Hattie -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Crow Wing River At Nimrod | 333 cfs | → |
| Mississippi River At Brainerd | 2,480 cfs | → |
| Straight River Near Park Rapids | 46 cfs | → |
| Crow Wing River Near Pillager | 1,110 cfs | → |
| Mississippi River At Aitkin | 2,160 cfs | → |
| Mississippi River Near Bemidji | 225 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lake Hattie.
Boat launches
- East Ponto Lake Road Northwest Cass County
- First Street N Cass County
- Washburn Avenue Backus
- Woodrow Twp Rd 11 Cass County
- Cass County
- Wabedo Pass Road Northeast Wabedo
Campgrounds
- Pine River Bike Cg - Dnr
- Ronald Cloutier - Cross Lake
- Us Army Corps Of Engineers Campground
- Clint Converse - Land Olakes State Forest
- Washburn Lake - Land Olakes State Forest
- Land O'Lakes Sf - Clint Converse
Fishing spots
Paddle runs
- The Discharge Of The Flood Diversion Channel To Riverton
- The 25-Acre Island Just South Of Brainerd To Roscoe Island
- Cass Lake To Lake Winnibigoshish
- The Boundary Between Logan And Workman Townships In Aitkin County To The Dam Entrance Of The Flood Diversion Channel
- Lake Winnigigoshish To Blackwater Lake
- The Outlet Of Lake Itasca To The Iron Bridge Of County Road 7
Track Lake Hattie 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 Lake Hattie
Where does the data for Lake Hattie 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 Lake Hattie.