Dam Report

Elsie dam

Wyoming, USA Moss Agate Creek Hazard Significant
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Tonight low
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Dam height
39ft
Hazard rating
Significant
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Elsie -- None dam
Elsie None · Moss Agate Creek
About this dam

Elsie

Elsie is a privately owned Earth dam located in Converse, Wyoming, specifically in the city of Douglas along Moss Agate Creek. Completed in 1975, this irrigation dam stands at a height of 39 feet with a hydraulic height of 34 feet and a length of 328 feet. It has a storage capacity of 51 acre-feet and serves the purpose of irrigation for the surrounding area.

Despite its significant hazard potential and poor condition assessment, Elsie has a moderate risk assessment rating of 3. The dam features an uncontrolled spillway with a width of 30 feet and an outlet gate consisting of one valve. The last inspection was conducted in October 2018, with an inspection frequency of 5 years. Elsie is regulated by the State Engineer's Office and is subject to permitting, inspection, and enforcement by the state regulatory agency.

Elsie's location in the Omaha District and its association with the USACE (U.S. Army Corps of Engineers) make it a crucial water resource for the region. Enthusiasts interested in water resource management and climate impacts on dams would find Elsie's structural details and operational aspects intriguing, especially considering its importance for irrigation purposes in the area.

StateNone
River / streamMoss Agate Creek
NID IDWY01338
Owner typePrivate
Primary purposeIrrigation
Dam typeEarth
Year built1975
Dam height39 ft
Dam length328 ft
Max storage51 AF
Normal storage51 AF
Surface area6.0 ac
Drainage area2.2 sq mi
Hazard potentialSignificant
ConditionPoor
Last inspectionWed, 24 Oct 2018 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 Elsie -- inflows here typically show up in storage 24-72 hours later.

Track Elsie 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 Elsie

Where does the data for Elsie 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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