Murray Lock And Dam dam
Murray Lock And Dam
Murray Lock and Dam, also known as Pool 7, is a federal-owned structure located in Little Rock, Arkansas, along the Arkansas River. Completed in 1969, this concrete gravity dam serves multiple purposes including navigation, hydroelectric power generation, and recreation. With a height of 23 feet and a length of 3740 feet, the dam has a storage capacity of 108,500 acre-feet and a maximum discharge rate of 416,000 cubic feet per second.
The dam is equipped with a controlled spillway and a single lock that is 600 feet long and 110 feet wide. The risk assessment for Murray Lock and Dam indicates a very high risk level, with the U.S. Army Corps of Engineers (USACE) actively managing flood risks by monitoring and maintaining the dam's structural integrity. USACE also collaborates with local emergency managers to develop emergency action plans and ensure readiness in case of a dam-related emergency. Regular inspections and maintenance are carried out to mitigate risks and ensure the safety of the surrounding communities.
Overall, Murray Lock and Dam plays a crucial role in water resource management and flood control along the Arkansas River. As a key infrastructure managed by USACE, it underscores the importance of proactive risk management and emergency preparedness in safeguarding communities and infrastructure from potential hazards associated with dam operations.
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 Murray Lock And Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Rock Creek At 36th Street At Little Rock | 5 cfs | → |
| Maumelle River At Maumelle Dam At Natural Steps | · | → |
| Lake Maumelle At State Hwy 10 Near Wye | 293 cfs | → |
| Saline River At Benton | 51 cfs | → |
| Maumelle River At Williams Junction | 0 cfs | → |
| Bayou Meto Near Lonoke | 1 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Murray Lock And Dam.
Boat launches
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Campgrounds
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Fishing spots
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River runs
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About Murray Lock And Dam
Where does the data for Murray Lock And Dam 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 below 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.
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.