Dam Report

Drury Garris No. 1 dam

Alabama, USA Tr-Big Prairie Hazard Low
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Dam height
17ft
Hazard rating
Low
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Drury Garris No. 1 -- None dam
Drury Garris No. 1 None · Tr-Big Prairie
About this dam

Drury Garris No. 1

Drury Garris No. 1 is a private earth dam located in Demopolis, Alabama, designed by the USDA NRCS for the primary purpose of creating a Fish and Wildlife Pond. Completed in 1987, this dam stands at 17 feet in height and spans 725 feet in length, with a storage capacity of 187.2 acre-feet and a surface area of 20 acres. It serves as a habitat for aquatic wildlife and contributes to the conservation efforts in the area.

Despite being classified as having a low hazard potential and a moderate risk assessment, Drury Garris No. 1 has not been rated for its condition assessment. The dam has an uncontrolled spillway with a width of 57 feet and a maximum discharge capacity of 580 cubic feet per second. While it has not been inspected since July 1987, the dam continues to play a crucial role in managing water resources in the region and supporting the local ecosystem.

As an important structure in the Mobile District, Drury Garris No. 1 provides valuable insights into the management of water resources and the conservation of fish and wildlife habitats. Its location on the TR-Big Prairie stream in Hale County, Alabama, showcases the efforts of the Natural Resources Conservation Service in promoting sustainable practices for water resource management. This dam serves as a reminder of the importance of maintaining and monitoring critical infrastructure to ensure the safety and well-being of both humans and the environment.

StateNone
River / streamTr-Big Prairie
NID IDAL02327
Owner typePrivate
Primary purposeFish And Wildlife Pond
Dam typeEarth
Year built1987
Dam height17 ft
Dam length725 ft
Max storage187 AF
Normal storage100 AF
Surface area20.0 ac
Drainage area0.2 sq mi
Hazard potentialLow
ConditionNot Rated
Last inspectionWed, 29 Jul 1987 12:00:00 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 Drury Garris No. 1 -- inflows here typically show up in storage 24-72 hours later.

Track Drury Garris No. 1 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 Drury Garris No. 1

Where does the data for Drury Garris No. 1 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 Low 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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