Dam Report

George W. Andrews Lock And Dam dam

Alabama, USA Chattahoochee River Hazard Significant
Today high
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Tonight low
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Dam height
59ft
Hazard rating
Significant
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George W. Andrews Lock And Dam -- None dam
George W. Andrews Lock And Dam None · Chattahoochee River
About this dam

George W. Andrews Lock And Dam

George W. Andrews Lock and Dam, located on the Chattahoochee River in Gordon, Alabama, is a federal structure owned and managed by the US Army Corps of Engineers. Completed in 1963, the dam serves primarily for navigation purposes, with added benefits for recreation. The gravity dam stands at 59 feet in height and extends for 775 feet, creating George W. Andrews Lake with a surface area of 1540 acres and a maximum storage capacity of 18,180 acre-feet. In addition to facilitating navigation, the dam plays a crucial role in managing water levels and mitigating flood risks in the region.

The significant hazard potential of the dam necessitates regular inspections and risk management measures to ensure its structural integrity and the safety of downstream communities. The US Army Corps of Engineers actively monitors and maintains the dam, collaborates with emergency managers, and updates emergency action plans to address potential risks and respond effectively in case of a dam-related emergency. Despite its risk factors, George W. Andrews Lock and Dam continues to play a vital role in water resource management and climate resilience efforts in the region, highlighting the importance of sustainable infrastructure development and proactive risk mitigation strategies for water resource enthusiasts.

StateNone
River / streamChattahoochee River
NID IDAL01433
Owner typeFederal
Primary purposeNavigation
Dam typeGravity
Year built1963
Dam length775 ft
Max storage18,180 AF
Normal storage18,180 AF
Surface area1,540.0 ac
Drainage area8,210.0 sq mi
Hazard potentialSignificant
ConditionNot Available
Last inspectionTue, 19 May 2020 05:00:00 GMT
EAP preparedYes

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 George W. Andrews Lock And Dam -- inflows here typically show up in storage 24-72 hours later.

Track George W. Andrews Lock And Dam 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 George W. Andrews Lock And Dam

Where does the data for George W. Andrews 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 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.