Dam Report

Deer Lodge Sewage Lagoon dam

Montana, USA Tr-Clark Fork Hazard Low
Today high
--
Tonight low
--
Dam height
8ft
Hazard rating
Low
Loading current conditions…
Loading next 24 hours…
Loading 7-day outlook…
Deer Lodge Sewage Lagoon -- None dam
Deer Lodge Sewage Lagoon None · Tr-Clark Fork
About this dam

Deer Lodge Sewage Lagoon

Deer Lodge Sewage Lagoon, located in Powell County, Montana, is a crucial water resource managed by the local government. This sewage lagoon plays a vital role in treating wastewater from the city of Deer Lodge before it is discharged into the nearby TR-Clark Fork river. Constructed in 1960, this Earth dam structure stands at a height of 8 feet and has a storage capacity of 98 acre-feet. Despite being a low hazard potential facility, the state-regulated lagoon undergoes regular inspections, permitting, and enforcement to ensure its safe operation and compliance with environmental regulations.

As a primary sewage treatment facility, Deer Lodge Sewage Lagoon serves the community by efficiently processing and treating wastewater. With a maximum storage capacity of 98 acre-feet, this lagoon helps to protect the local waterways from pollution and contamination. The facility is situated in a strategic location near the TR-Clark Fork river, making it an essential component of the city's infrastructure for water resource management.

Managed by the Montana Department of Natural Resources and Conservation (DNRC), Deer Lodge Sewage Lagoon demonstrates a commitment to environmental stewardship and public health. Although the facility's condition assessment is currently listed as "Not Rated," the regular maintenance, inspections, and emergency preparedness measures in place ensure the safety and reliability of this vital water resource infrastructure. For water resource and climate enthusiasts, Deer Lodge Sewage Lagoon represents a key example of sustainable water management practices in action.

StateNone
River / streamTr-Clark Fork
NID IDMT01421
Owner typeLocal Government
Primary purposeOther
Dam typeEarth
Year built1960
Dam height8 ft
Dam length1,500 ft
Max storage98 AF
Normal storage98 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.

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 Deer Lodge Sewage Lagoon -- inflows here typically show up in storage 24-72 hours later.

Track Deer Lodge Sewage Lagoon 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 Deer Lodge Sewage Lagoon

Where does the data for Deer Lodge Sewage Lagoon 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 Deer Lodge Sewage Lagoon.