Dam Report

High Rock Lake - Site 24 dam

Alabama, USA Shoal Creek Hazard High
Today high
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Tonight low
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Dam height
88ft
Hazard rating
High
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High Rock Lake - Site 24 -- None dam
High Rock Lake - Site 24 None · Shoal Creek
About this dam

High Rock Lake - Site 24

High Rock Lake - Site 24, located in Cleburne, Alabama, is a crucial water resource managed by the USDA Forest Service and Natural Resources Conservation Service. Built in 1972 for flood risk reduction on Shoal Creek, this Earth dam stands at a height of 88 feet with a hydraulic height of 14 feet, providing storage capacity of 6,926 acre-feet and a maximum discharge of 2,221 cubic feet per second.

Despite its age, the dam's hazard potential is classified as high, with a very high risk assessment rating. Although the condition assessment is marked as "not rated," regular inspections and emergency action plans are in place to ensure public safety. With a controlled spillway and vertical lift outlet gates, the dam's design and construction reflect its primary purpose of flood risk reduction, safeguarding the surrounding area from potential inundation.

High Rock Lake - Site 24's critical role in managing water resources and mitigating flood risks underscores the importance of ongoing monitoring and maintenance. With its strategic location and significant storage capacity, this dam serves as a vital infrastructure asset in the region, highlighting the collaborative efforts of federal agencies in safeguarding communities and ecosystems from the impacts of extreme weather events and climate variability.

StateNone
River / streamShoal Creek
NID IDAL00614
Owner typeFederal
Primary purposeFlood Risk Reduction
Dam typeEarth
Year built1972
Dam height88 ft
Dam length514 ft
Max storage6,926 AF
Normal storage2,251 AF
Drainage area13.0 sq mi
Hazard potentialHigh
ConditionNot Rated
Last inspectionThu, 04 Sep 2014 00:00:00 GMT

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.
Detailed forecast

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.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

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.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Regional inflow

Nearby streamflow gauges

USGS streamgauges around High Rock Lake - Site 24 -- inflows here typically show up in storage 24-72 hours later.

Track High Rock Lake - Site 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.

FAQ

About High Rock Lake - Site 24

Where does the data for High Rock Lake - Site 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 High 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.

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