Mississippi River Lock And Dam 11 dam
Mississippi River Lock And Dam 11
Mississippi River Lock and Dam 11, also known as Pool 11, is a vital federal infrastructure located in Dubuque, Iowa. Completed in 1937, this concrete dam plays a crucial role in navigation along the Mississippi River, with a hydraulic height of 11 feet and a structural height of 43 feet. The dam's spillway type is controlled, with a spillway width of 1278 feet, and it features a single lock that is 600 feet long and 110 feet wide.
Despite being classified with a significant hazard potential, a risk assessment conducted by the US Army Corps of Engineers (USACE) in April 2019 deemed the risks associated with Lock and Dam 11 as normal. The assessment focused on potential issues such as a dam failure or a lock shutdown, with measures in place to mitigate these risks. Continuous inspections, maintenance activities, and an updated Emergency Action Plan contribute to the dam's well-maintained state and preparedness for any emergencies.
USACE is dedicated to reducing risks and ensuring the safety of the community surrounding Lock and Dam 11. With a focus on regular monitoring, updated emergency plans, and communication strategies, USACE works closely with state and local agencies to enhance emergency response capabilities and increase awareness among stakeholders and the public. This commitment to risk management and safety underscores the importance of Mississippi River Lock and Dam 11 in maintaining navigation and protecting the surrounding area from potential hazards.
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 11 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Sinsinawa River Near Menominee | 29 cfs | → |
| Platte River Near Rockville | 287 cfs | → |
| Grant River At Burton | 333 cfs | → |
| North Fork Maquoketa River Near Fulton | 479 cfs | → |
| Apple River Near Hanover | 94 cfs | → |
| Pecatonica River At Darlington | 305 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mississippi River Lock And Dam 11.
Boat launches
- Mississippi River -- Sandy Hook Landing
- A Y Macdonald Park
- Admiral Sheehy Drive Dubuque
- Riverside Road Dubuque County
- Boat Ramp Road East Dubuque
- Golf Lake Road Dubuque County
Campgrounds
- Dubuque Yacht Basin And Rv Park
- Miller Riverview Park & Campground
- Miller Riverview City Park
- Heritage Campground & Pond
- Mud Lake Park Campground
- Mud Lake County Park
Fishing spots
Track Mississippi River Lock And Dam 11 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 11
Where does the data for Mississippi River Lock And Dam 11 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 11.