Mississippi River Lock And Dam 19 dam
Mississippi River Lock And Dam 19
Mississippi River Lock and Dam 19, also known as Lake Keokuk, is a Federal-owned structure located in Keokuk, Illinois. Completed in 1913, this concrete gravity dam serves primarily for navigation purposes on the Mississippi River. With a structural height of 63 feet and a hydraulic height of 38 feet, the dam spans a length of 7460 feet and has a maximum discharge capacity of 428,000 cubic feet per second.
Managed by the US Army Corps of Engineers, Lock and Dam 19 has a significant hazard potential due to its location and design. The risk assessment for this dam is categorized as "Very High," emphasizing the importance of continuous monitoring, maintenance, and risk management measures to ensure its structural integrity and mitigate flood-related risks. The Corps actively engages with local emergency managers and the public to raise awareness and readiness for potential dam-related emergencies, while also updating the emergency action plan regularly to address any identified risks.
With one lock on site, Lock and Dam 19 plays a crucial role in maintaining water levels and managing flood risks along the Mississippi River. As part of the US Army Corps of Engineers' ongoing efforts to address potential hazards and ensure public safety, detailed information regarding the specific risk management measures and dam-related flood risks associated with this structure will be provided in the future. This underscores the importance of proactive maintenance and emergency preparedness to safeguard both the dam's functionality and surrounding communities.
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 Mississippi River Lock And Dam 19 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Des Moines River At St. Francisville | 11,200 cfs | → |
| Fox River At Wayland | 537 cfs | → |
| Bear Creek Near Marcelline | 210 cfs | → |
| Wyaconda River Above Canton | 785 cfs | → |
| Skunk River At Augusta | 2,860 cfs | → |
| La Moine River At Colmar | 313 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mississippi River Lock And Dam 19.
Track Mississippi River Lock And Dam 19 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 Mississippi River Lock And Dam 19
Where does the data for Mississippi River Lock And Dam 19 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 Mississippi River Lock And Dam 19.