Pokegama Dam - Dikes 4 And 5 dam
Pokegama Dam - Dikes 4 And 5
Pokegama Dam, consisting of Dikes 4 and 5, is a concrete structure located in Grand Rapids, Minnesota, along the Mississippi River. Completed in 1884, the dam serves multiple purposes, including flood risk reduction, navigation, water supply, and recreation. With a height of 17 feet and a volume of 3,700 cubic feet, the dam has a significant hazard potential and a very high risk assessment rating.
Operated by the US Army Corps of Engineers, Pokegama Dam is regularly inspected and monitored to ensure its structural integrity and manage flood risks effectively. The dam has a controlled spillway with a width of 108 feet to regulate water levels and prevent overtopping during severe weather events. In case of emergencies, an Emergency Action Plan (EAP) is in place to guide response and evacuation procedures, meeting established guidelines and ensuring public safety.
USACE actively engages with local emergency managers and the public to raise awareness about the dam and promote preparedness for potential emergencies. By prioritizing maintenance and repairs, as well as updating the EAP regularly, efforts are made to mitigate flood risks and ensure the dam's functionality. Despite the inherent risks associated with dams, USACE continues to work towards addressing all types of flood risks and maintaining the safety and integrity of Pokegama Dam.
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 Pokegama Dam - Dikes 4 And 5 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Mississippi River At Grand Rapids | 446 cfs | → |
| Prairie River Near Taconite | 167 cfs | → |
| Mississippi River At Aitkin | 1,950 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Pokegama Dam - Dikes 4 And 5.
Boat launches
- Pokegama Lake, Golf Course Rd
- Mississippi River, Izaak Walton Park
- Mississippi River, Sylvan Bay
- Pokegama Lake, #2
- Forest Lake
- Hale Lake
Campgrounds
- Pokegama Rec Area
- Pokegama-Coe
- Itasca County Fairgrounds
- Itasca County Fairgrouds Campground
- Kom-On-In Beach Campground
- Group Camp G1
Fishing spots
Paddle runs
- The Confluence Of The Prairie River To The Boundary Of Logan And Workman Townships
- Lake Winnigigoshish To Blackwater Lake
- The Boundary Between Logan And Workman Townships In Aitkin County To The Dam Entrance Of The Flood Diversion Channel
- Dora Lake To State Highway 6
- Cass Lake To Lake Winnibigoshish
- The Discharge Of The Flood Diversion Channel To Riverton
Track Pokegama Dam - Dikes 4 And 5 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 Pokegama Dam - Dikes 4 And 5
Where does the data for Pokegama Dam - Dikes 4 And 5 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 Pokegama Dam - Dikes 4 And 5.