Dam Report

Vineyards Twin Lakes Lower Dam dam

Missouri, USA Tr Flat River Hazard High
Today high
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Tonight low
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Dam height
30ft
Hazard rating
High
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Vineyards Twin Lakes Lower Dam -- None dam
Vineyards Twin Lakes Lower Dam None · Tr Flat River
About this dam

Vineyards Twin Lakes Lower Dam

Vineyards Twin Lakes Lower Dam, located in St. Francois, Missouri, was completed in 1958 and serves as a recreational site for water resource and climate enthusiasts. This private earth dam, with a height of 30 feet and a storage capacity of 209 acre-feet, is nestled along the TR Flat River and covers a surface area of 13 acres. Despite its primary purpose for recreation, the dam is noted to have a high hazard potential, although its condition assessment remains unrated.

With a maximum storage capacity of 209 acre-feet and a normal storage of 140 acre-feet, Vineyards Twin Lakes Lower Dam is a significant feature in the Kansas City District. While the dam's spillway type and spillway width remain unspecified, its association with the TR Flat River provides ample opportunities for water-based activities in the region. Although the dam poses a high hazard potential, its management measures and risk assessments are currently unlisted.

This privately owned dam, located in Elvins, Missouri, offers a serene environment for outdoor enthusiasts to explore the surrounding landscapes and engage in recreational activities. With a history dating back to 1958, Vineyards Twin Lakes Lower Dam continues to be a vital part of the water resource and climate scene in St. Francois County, Missouri.

StateNone
River / streamTr Flat River
NID IDMO30276
Owner typePrivate
Primary purposeRecreation
Dam typeEarth
Year built1958
Dam height30 ft
Max storage209 AF
Normal storage140 AF
Surface area13.0 ac
Drainage area580.0 sq mi
Hazard potentialHigh
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 Vineyards Twin Lakes Lower Dam -- inflows here typically show up in storage 24-72 hours later.

Track Vineyards Twin Lakes Lower 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 Vineyards Twin Lakes Lower Dam

Where does the data for Vineyards Twin Lakes Lower 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 High 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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