Dam Report

Gutshot Detention Dam dam

Montana, USA Willow Ck./Milk River Hazard Low
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Dam height
38ft
Hazard rating
Low
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Gutshot Detention Dam -- None dam
Gutshot Detention Dam None · Willow Ck./Milk River
About this dam

Gutshot Detention Dam

Gutshot Detention Dam, located in Valley, Montana, was completed in 1965 by the Bureau of Land Management with the primary purpose of flood risk reduction along the Willow Creek/Milk River. This gravity dam stands at a hydraulic height of 30 feet and a structural height of 38 feet, with a length of 2061 feet and a storage capacity of 3326.9 acre-feet. Despite its moderate risk assessment, the dam has a low hazard potential and an unsatisfactory condition assessment.

Managed and funded by the Bureau of Land Management, Gutshot Detention Dam serves as a crucial infrastructure for flood control in the region. With a surface area of 297.31 acres and a normal storage capacity of 3139 acre-feet, the dam plays a vital role in protecting the surrounding areas from potential flooding events. Despite its outdated inspection date in 2009, the dam is equipped with an uncontrolled spillway and poses a low hazard potential to the community.

While Gutshot Detention Dam has not been state-regulated or inspected since 2009, it remains an essential component of flood risk reduction efforts in the area. With its satisfactory but unsatisfactory condition assessment and moderate risk assessment level, the dam continues to provide valuable flood protection services to the residents of Nashua, Montana, and the surrounding areas. As climate change intensifies and water resources become increasingly precious, the maintenance and upkeep of structures like Gutshot Detention Dam are crucial for safeguarding communities against the impacts of extreme weather events.

StateNone
River / streamWillow Ck./Milk River
NID IDMT00733
Owner typeFederal
Primary purposeFlood Risk Reduction
Dam typeGravity
Year built1965
Dam length2,061 ft
Max storage3,327 AF
Normal storage3,139 AF
Surface area297.3 ac
Hazard potentialLow
ConditionUnsatisfactory
Last inspectionSat, 29 Aug 2009 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 Gutshot Detention Dam -- inflows here typically show up in storage 24-72 hours later.

Track Gutshot Detention 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 Gutshot Detention Dam

Where does the data for Gutshot Detention 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 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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