Dam Report

Tailings Pond No. 4 Dam 2b dam

Wyoming, USA Stevens Draw Hazard Significant
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Tonight low
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Dam height
27ft
Hazard rating
Significant
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Tailings Pond No. 4 Dam 2b -- None dam
Tailings Pond No. 4 Dam 2b None · Stevens Draw
About this dam

Tailings Pond No. 4 Dam 2b

Tailings Pond No. 4 Dam 2b, located in Green River, Wyoming, is a privately owned structure designed by Phillip B. Solseng for tailings management. Completed in 1992, this earth dam stands at a height of 27 feet, with a hydraulic height of 22 feet and a structural height of 39 feet. It has a length of 950 feet and a storage capacity of 4612 acre-feet, serving the primary purpose of storing tailings from mining operations.

This significant dam on Stevens Draw has a spillway width of 50 feet for uncontrolled discharge and a drainage area of 4.1 square miles. Although it is state-regulated and inspected, with a moderate risk assessment rating, there is no information provided on the dam's condition assessment or emergency action plan. The dam's hazard potential is deemed significant, highlighting the importance of regular monitoring and maintenance to ensure its continued safety and functionality for both the environment and surrounding communities.

Tailings Pond No. 4 Dam 2b is a vital part of the mining infrastructure in Sweetwater County, Wyoming, serving as a containment structure for tailings while posing a moderate risk in terms of potential hazards. With its stone core and soil foundation, this dam plays a crucial role in managing mining waste and protecting water resources in the region. As water resource and climate enthusiasts, staying informed about the condition and management of structures like Tailings Pond No. 4 Dam 2b is essential for fostering sustainable practices and mitigating risks associated with mining activities.

StateNone
River / streamStevens Draw
NID IDWY02047
Owner typePrivate
Primary purposeTailings
Dam typeEarth
Year built1992
Dam height27 ft
Dam length950 ft
Normal storage4,612 AF
Surface area239.0 ac
Drainage area4.1 sq mi
Hazard potentialSignificant
Last inspectionThu, 04 Jun 2020 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 Tailings Pond No. 4 Dam 2b -- inflows here typically show up in storage 24-72 hours later.

Track Tailings Pond No. 4 Dam 2b 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 Tailings Pond No. 4 Dam 2b

Where does the data for Tailings Pond No. 4 Dam 2b 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.