Dam Report

Muddy Guard No. 2 North Dam dam

Wyoming, USA Erosion Draw & Guard Draw Hazard Significant
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Dam height
102ft
Hazard rating
Significant
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Muddy Guard No. 2 North Dam -- None dam
Muddy Guard No. 2 North Dam None · Erosion Draw & Guard Draw
About this dam

Muddy Guard No. 2 North Dam

Muddy Guard No. 2 North Dam, located in Arvada, Wyoming, was completed in 1976 and serves primarily for irrigation purposes in the area. The dam stands at a structural height of 102 feet and has a hydraulic height of 97 feet, with a length of 1260 feet. With a significant hazard potential and fair condition assessment, the dam is inspected every five years to ensure its safety and functionality.

Situated on Erosion Draw & Guard Draw, the Muddy Guard No. 2 North Dam holds a storage capacity of 1934 acre-feet and covers a surface area of 51 acres. The dam features an uncontrolled spillway type with a width of 12 feet and is constructed mainly of earth and stone materials. Despite its moderate risk assessment rating, the dam is regulated, inspected, and enforced by the State of Wyoming to meet safety standards and prevent potential disasters.

Owned privately, the Muddy Guard No. 2 North Dam plays a crucial role in supporting the local irrigation needs and providing a fish and wildlife pond. With Liz Cheney as the Congressional Representative for the area, the dam's presence ensures water resource management and climate resilience in Johnson County, Wyoming.

StateNone
River / streamErosion Draw & Guard Draw
NID IDWY01333
Owner typePrivate
Primary purposeIrrigation
Dam typeEarth
Year built1976
Dam height102 ft
Dam length1,260 ft
Max storage1,934 AF
Normal storage1,934 AF
Surface area51.0 ac
Drainage area0.4 sq mi
Hazard potentialSignificant
ConditionFair
Last inspectionWed, 24 Apr 2019 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 Muddy Guard No. 2 North Dam -- inflows here typically show up in storage 24-72 hours later.

Track Muddy Guard No. 2 North 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 Muddy Guard No. 2 North Dam

Where does the data for Muddy Guard No. 2 North 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 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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