Mississippi River Lock And Dam 24 dam
Mississippi River Lock And Dam 24
Mississippi River Lock and Dam 24, located in Clarksville, Missouri, is a critical structure operated by the US Army Corps of Engineers for the primary purpose of navigation along the Mississippi River. Completed in 1940, this concrete dam stands at a height of 55 feet and has a hydraulic height of 32 feet, with a length of 4584 feet and a storage capacity of 125,363 acre-feet. The dam features a controlled spillway with a width of 1200 feet and a single lock with dimensions of 600 feet in length and 110 feet in width.
With a significant hazard potential and a very high risk assessment rating, the dam is subject to regular inspections and emergency action plan updates to ensure its structural integrity and mitigate flood risks. The US Army Corps of Engineers manages dam-related flood risks by monitoring the dam's condition, prioritizing maintenance activities, and engaging with local emergency managers and the public to increase awareness and preparedness for potential emergencies. Despite the risks associated with dam operations, the US Army Corps of Engineers remains dedicated to ensuring the safety and functionality of Mississippi River Lock and Dam 24 for navigation and flood control purposes.
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 24 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Bay Creek At Pittsfield | 43 cfs | → |
| Spencer Cr. Bl Plum Cr. Nr Frankford | 19 cfs | → |
| Cuivre River Near Troy | 259 cfs | → |
| Illinois River At Valley City | 8,140 cfs | → |
| Macoupin Creek Near Kane | 135 cfs | → |
| Salt River Near New London | 1,370 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mississippi River Lock And Dam 24.
Boat launches
- Clarksville
- Pike County
- Oak Street Kampsville
- South Harbor Road Lincoln County
- Florance Boat Ramp
- Lakeside Trail Lincoln County
Track Mississippi River Lock And Dam 24 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 24
Where does the data for Mississippi River Lock And Dam 24 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 24.