Dam Report

Des Arc Bayou Wid Site 3 dam

Arkansas, USA Des Arc Bayou Hazard Significant
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Dam height
128ft
Hazard rating
Significant
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Des Arc Bayou Wid Site 3 -- None dam
Des Arc Bayou Wid Site 3 None · Des Arc Bayou
About this dam

Des Arc Bayou Wid Site 3

Des Arc Bayou Wid Site 3, also known as Lake Barnett, is a state-owned recreational water resource located in Harmony, Arkansas. This site was designed by the USDA NRCS and is regulated by the Arkansas Natural Resources Commission (ANRC). The dam, completed in 1979, is an earth core type with a height of 128 feet and a length of 1150 feet, providing a storage capacity of 25425 acre-feet and a surface area of 245 acres.

With a drainage area of 38.6 square miles, Des Arc Bayou Wid Site 3 has a significant hazard potential but its risk assessment is moderate. The dam features an uncontrolled spillway and outlet gates, with a maximum discharge capacity of 850 cubic feet per second. Despite not being rated for condition assessment, the site undergoes regular state inspections and enforcement to ensure public safety and regulatory compliance. For water resource and climate enthusiasts, this site offers a fascinating example of state-managed water infrastructure in a picturesque natural setting.

StateNone
River / streamDes Arc Bayou
NID IDAR01410
Owner typeState
Primary purposeRecreation
Dam typeEarth
Year built1979
Dam height128 ft
Dam length1,150 ft
Max storage25,425 AF
Normal storage6,708 AF
Surface area245.0 ac
Drainage area38.6 sq mi
Hazard potentialSignificant
ConditionNot Rated
Last inspectionMon, 02 May 2016 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 Des Arc Bayou Wid Site 3 -- inflows here typically show up in storage 24-72 hours later.

Track Des Arc Bayou Wid Site 3 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 Des Arc Bayou Wid Site 3

Where does the data for Des Arc Bayou Wid Site 3 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.

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