Dam Report

Target Detention Dam dam

Montana, USA Willow Ck./Milk River Hazard Low
Today high
--
Tonight low
--
Dam height
18ft
Hazard rating
Low
Loading current conditions…
Loading next 24 hours…
Loading 7-day outlook…
Target Detention Dam -- None dam
Target Detention Dam None · Willow Ck./Milk River
About this dam

Target Detention Dam

The Target Detention Dam, located in Nashua, Montana, serves as a crucial flood risk reduction structure along the Willow Creek/Milk River. Built in 1964 by the Bureau of Land Management, this gravity dam stands at 18 feet tall with a structural height of 15 feet and a length of 1575 feet. With a storage capacity of 619 acre-feet and a surface area of 97.01 acres, the dam plays a vital role in protecting the surrounding area from potential flooding events.

Managed and funded by the Bureau of Land Management, the Target Detention Dam has been deemed to have a low hazard potential, but its current condition assessment is unsatisfactory. Despite this, the risk assessment for the dam remains moderate, highlighting the need for ongoing monitoring and maintenance to ensure its continued effectiveness in flood risk reduction. With a designated inspection frequency of 5 years, it is crucial for stakeholders and enthusiasts in water resource and climate management to stay informed and engaged in the upkeep of this important infrastructure.

As water resource and climate enthusiasts track the Target Detention Dam's progress and maintenance, they can also appreciate its historical significance and engineering feat in managing flood risk in the region. With its location in a remote area of Valley County, Montana, the dam stands as a testament to human ingenuity in mitigating natural disasters and protecting communities and ecosystems from the impacts of extreme weather events. By staying engaged with the dam's updates and maintenance efforts, enthusiasts can contribute to the preservation of this vital infrastructure for future generations.

StateNone
River / streamWillow Ck./Milk River
NID IDMT00709
Owner typeFederal
Primary purposeFlood Risk Reduction
Dam typeGravity
Year built1964
Dam length1,575 ft
Max storage619 AF
Surface area97.0 ac
Drainage area5.4 sq mi
Hazard potentialLow
ConditionUnsatisfactory
Last inspectionFri, 01 Nov 2019 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.

Loading hourly forecast…
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
Loading detailed forecast…
Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

Loading 15-day outlook…
Regional inflow

Nearby streamflow gauges

USGS streamgauges around Target Detention Dam -- inflows here typically show up in storage 24-72 hours later.

Track Target 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 Target Detention Dam

Where does the data for Target 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.

More reservoirs

Other water bodies near here

Snoflo-tracked reservoirs and dams within driving distance of Target Detention Dam.

Premium feature

Favorites and alerts are part of Snoflo Premium. Save reservoirs, set storage thresholds, and get push notifications when conditions cross.

Upgrade to Premium Not now
🔔

Manage alerts in the Snoflo app

Custom alerts are configured in the iOS app -- favorite this dam, set a threshold, and you'll get a push the moment conditions cross.

Open App Store