Dam Report

Graber #2 dam

Montana, USA Tr-South Fork Bear Creek Hazard Low
Today high
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Tonight low
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Dam height
39ft
Hazard rating
Low
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Graber #2 -- None dam
Graber #2 None · Tr-South Fork Bear Creek
About this dam

Graber #2

Graber #2, located in Fergus County, Montana, is a privately owned earth dam constructed in 1958 by the USDA NRCS for multiple purposes, including fire protection, stock water, and small fish pond. With a height of 39 feet and a length of 3168 feet, this dam has a storage capacity of 479 acre-feet, providing essential water resources for the surrounding area. Situated on TR-South Fork Bear Creek, Graber #2 is regulated by the Montana DNRC and undergoes regular inspections and enforcement to ensure its safety and functionality.

Despite being classified as a low hazard potential structure, Graber #2 has not been rated for its current condition. The dam's emergency action plan (EAP) status is unknown, with important details like the last inspection date, condition assessment, and risk assessment still pending. It is crucial for water resource and climate enthusiasts to monitor the condition of Graber #2 closely to ensure its continued effectiveness in providing water for fire protection, livestock, and small fish pond purposes. With potential risks associated with dam failure, having a comprehensive EAP and regular maintenance checks are essential to safeguard the surrounding community and environment.

Although Graber #2 has not been updated or inspected recently, its role in providing water resources for its designated purposes underscores the importance of proper dam maintenance and monitoring. As a key infrastructure in Fergus County, Montana, this earth dam serves as a crucial resource for the local community and wildlife. Continued oversight and proactive measures are necessary to mitigate potential risks and ensure the long-term functionality and safety of Graber #2 for future generations.

StateNone
River / streamTr-South Fork Bear Creek
NID IDMT02592
Owner typePrivate
Primary purposeFire Protection, Stock, Or Small Fish Pond
Dam typeEarth
Year built1958
Dam height39 ft
Dam length3,168 ft
Max storage479 AF
Normal storage347 AF
Hazard potentialLow
ConditionNot Rated

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 Graber #2 -- inflows here typically show up in storage 24-72 hours later.

Track Graber #2 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 Graber #2

Where does the data for Graber #2 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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