Dam Report

Tannehill Valley Lake dam

Alabama, USA Mud Creek Hazard Low
Today high
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Tonight low
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Dam height
31ft
Hazard rating
Low
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Tannehill Valley Lake -- None dam
Tannehill Valley Lake None · Mud Creek
About this dam

Tannehill Valley Lake

Tannehill Valley Lake, located in Tannehill State Park in Jefferson County, Alabama, is a private recreational reservoir that was completed in 1975. The lake has a storage capacity of 220 acre-feet and serves as a popular spot for outdoor enthusiasts looking to enjoy activities such as fishing, boating, and picnicking. Situated along Mud Creek, the dam that creates Tannehill Valley Lake is primarily used for recreational purposes and has a low hazard potential.

Managed by a private owner, Tannehill Valley Lake boasts a structural height of 31 feet and a hydraulic height of 27 feet. The reservoir covers a surface area of approximately 750 feet and has a normal storage capacity of 195 acre-feet. While the dam is categorized as an earth-fill structure, it does not have any associated locks or spillways. Despite not being regulated by the state, the dam is considered to have a low hazard potential and is currently rated as "Not Rated" in terms of its condition assessment.

For water resource and climate enthusiasts looking to explore a scenic recreational destination in Alabama, Tannehill Valley Lake offers a tranquil setting surrounded by natural beauty. Whether visitors are seeking a peaceful day of fishing or an adventurous outing on the water, this private reservoir provides a picturesque backdrop for outdoor activities. With its low hazard potential and focus on recreation, Tannehill Valley Lake is a hidden gem within Jefferson County that caters to a variety of leisure interests.

StateNone
River / streamMud Creek
NID IDAL01507
Owner typePrivate
Primary purposeRecreation
Dam typeEarth
Year built1975
Dam length750 ft
Max storage220 AF
Normal storage195 AF
Hazard potentialLow
ConditionNot Rated

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 Tannehill Valley Lake -- inflows here typically show up in storage 24-72 hours later.

Track Tannehill Valley Lake 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 Tannehill Valley Lake

Where does the data for Tannehill Valley Lake 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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