Pool No. 27 dam
Pool No. 27
Pool No. 27, also known as Agassiz Pool, is a federal-owned water resource located in Thief River Falls, Minnesota. Built in 1938, this Earth-type dam stands at a height of 16 feet and stretches for a length of 1000 feet, with a NID storage capacity of 61310 acre-feet. The primary purpose of this dam is listed as "Other", with a low hazard potential and a condition assessment of "Not Rated".
Situated on the Thief River, Pool No. 27 serves as a vital resource for the surrounding area, providing a maximum discharge capacity of 25500 cubic feet per second. Despite not being state-regulated or inspected, this dam plays a crucial role in flood control and water management efforts in the region. With its historical significance and strategic location, Pool No. 27 remains a key part of the water infrastructure in Marshall County, Minnesota.
As water resource and climate enthusiasts continue to monitor and study the impact of dams on our environment, Pool No. 27 stands out as a noteworthy structure with a rich history and important role in the local ecosystem. While its condition assessment is currently marked as "Not Rated", ongoing efforts to assess and manage risk associated with this dam will be crucial in ensuring its continued safety and functionality for years to come.
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 Pool No. 27 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Thief River Near Thief River Falls | 289 cfs | → |
| Red Lake River At High Landing Nr Goodridge | 311 cfs | → |
| Clearwater River At Plummer | 79 cfs | → |
| Clearwater River At Red Lake Falls | 234 cfs | → |
| Lost River At Oklee | 52 cfs | → |
| Roseau River Below South Fork Near Malung | 44 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Pool No. 27.
Boat launches
Campgrounds
- Holt Park
- Middle River Park
- Thief River Falls Scenic Tourist Park
- Strathcona City Park
- Grygla Camping Area
- Ralph J. Klein City Park
More reservoirs
Track Pool No. 27 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 Pool No. 27
Where does the data for Pool No. 27 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 Pool No. 27.