Dam Report

Signal Mountain Cement dam

Tennessee, USA Hazard Low
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Dam height
17ft
Hazard rating
Low
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Signal Mountain Cement -- None dam
Signal Mountain Cement None
About this dam

Signal Mountain Cement

Signal Mountain Cement is a privately owned dam located in Hamilton, Tennessee, and regulated by the Tennessee Safe Dams Program. Completed in 1977, this earth-type dam serves the primary purpose of water supply, with a height of 16.5 feet and a hydraulic height of 11 feet. With a storage capacity of 62 acre-feet, the dam covers a surface area of 5.7 acres and has a drainage area of 0.53 square miles.

Despite its low hazard potential and satisfactory condition assessment, Signal Mountain Cement is subject to regular inspections by state regulatory agencies. The dam features an uncontrolled spillway and has no outlet gates. The last inspection was conducted in July 2020, with a frequency of every 3 years. In the event of an emergency, the dam's Emergency Action Plan status and compliance with guidelines are currently unspecified.

Overall, Signal Mountain Cement provides a vital water resource for the surrounding area, with a moderate risk assessment rating. While the dam has not been modified in recent years and does not have a designated Emergency Action Plan, its risk management measures are not explicitly stated. Climate and water resource enthusiasts can appreciate the complex interplay of environmental factors and regulatory oversight involved in the maintenance and operation of this essential infrastructure.

StateNone
NID IDTN06508
Owner typePrivate
Primary purposeWater Supply
Dam typeEarth
Year built1977
Dam length160 ft
Max storage62 AF
Normal storage25 AF
Surface area5.7 ac
Drainage area0.5 sq mi
Hazard potentialLow
ConditionSatisfactory
Last inspectionWed, 15 Jul 2020 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 Signal Mountain Cement -- inflows here typically show up in storage 24-72 hours later.

Track Signal Mountain Cement in the Snoflo app

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FAQ

About Signal Mountain Cement

Where does the data for Signal Mountain Cement 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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