Townsend Sewage Lagoon dam
Townsend Sewage Lagoon
Located in Broadwater, Montana, the Townsend Sewage Lagoon serves as a crucial water supply facility for the local government. Constructed in 1962, this Earth-type dam stands at a height of 9 feet and spans 2500 feet in length, with a storage capacity of 148 acre-feet. Situated along the TR-Missouri River, this lagoon plays a vital role in maintaining water quality and availability in the area.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), the Townsend Sewage Lagoon is subject to state regulations and inspections to ensure its proper operation and enforcement of safety measures. With a low hazard potential and a current condition assessment of "Not Rated," this facility continues to meet the water supply needs of the community while prioritizing environmental sustainability and regulatory compliance.
As an essential infrastructure for water resource management, the Townsend Sewage Lagoon exemplifies the intersection of public health, environmental protection, and climate resilience. With its strategic location, reliable design, and state oversight, this facility stands as a testament to the importance of effective water management in a changing climate landscape.
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.
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.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
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.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Townsend Sewage Lagoon -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Missouri River At Toston Mt | 4,350 cfs | → |
| Prickly Pear Creek Near Clancy Mt | 40 cfs | → |
| Boulder River Near Boulder Mt | 311 cfs | → |
| Jefferson River Near Three Forks Mt | 2,170 cfs | → |
| Gallatin River At Logan Mt | 1,010 cfs | → |
| Tenmile Creek Near Helena Mt | 42 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Townsend Sewage Lagoon.
Boat launches
- West Loop Broadwater County
- Upper Toston Dam Boat Ramp
- Lower Toston Dam Boat Ramp
- East Shore Drive Lewis And Clark County
- Canyon Ferry Road 7604, Lewis And Clark County
- Canyon Ferry Road Lewis And Clark County
Campgrounds
- Canyon Ferry Lake
- Deepdale Fas
- Yorks Islands Fas
- Eagle Guard Cabin
- Confederate Campground
- Coulter Campground
Fishing spots
- Canyon Ferry Lake
- Crow Creek
- Deep Creek (Upper Missouri Drainage)
- Duck Creek (Upper Missouri Drainage)
- Leslie Lake
- Glenwood Lake
Track Townsend 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.
About Townsend Sewage Lagoon
Where does the data for Townsend 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.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Townsend Sewage Lagoon.