Mississippi River Lock And Dam 22 dam
Mississippi River Lock And Dam 22
Mississippi River Lock and Dam 22, also known as Pool 22, is a concrete structure located in Ashburn, Missouri, owned and operated by the US Army Corps of Engineers. Completed in 1938, the dam serves primarily for navigation purposes on the Mississippi River, with a length of 3,264 feet and a hydraulic height of 11 feet. It features a single lock with a length of 600 feet and a width of 110 feet, facilitating the movement of vessels along the river.
With a significant hazard potential and moderate risk assessment, the dam is subject to regular inspections and risk management measures by the USACE. These measures include continuous monitoring of the dam's condition, prioritizing activities to mitigate risks, and collaborating with local emergency managers to raise awareness and develop emergency response plans. The USACE also updates the emergency action plan for the dam, performs maintenance and repairs as needed, and prepares inundation maps to address potential flood risks associated with the structure.
In the face of varying water levels and potential weather-related challenges, the Mississippi River Lock and Dam 22 plays a crucial role in managing water flow along the river. By implementing proactive risk management strategies and engaging with local stakeholders, the USACE ensures the safety and functionality of the dam while addressing the complex challenges posed by natural events and maintaining the structural integrity of this vital water resource infrastructure.
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 22 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Salt River Near New London | 2,620 cfs | → |
| Bear Creek At Hannibal | 9 cfs | → |
| Spencer Cr. Bl Plum Cr. Nr Frankford | 245 cfs | → |
| Salt River Near Center | 453 cfs | → |
| North River At Palmyra | 159 cfs | → |
| Bay Creek At Pittsfield | 43 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mississippi River Lock And Dam 22.
Track Mississippi River Lock And Dam 22 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 22
Where does the data for Mississippi River Lock And Dam 22 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 22.