Troy Sewage Lagoons Dam dam
Troy Sewage Lagoons Dam
Troy Sewage Lagoons Dam, located in Troy, New Hampshire, was completed in 1983 and serves as a critical infrastructure for the local government. This Earth dam, with a height of 16 feet and a length of 600 feet, primarily functions for purposes other than water storage, with a maximum storage capacity of 35 acre-feet. The dam is under the jurisdiction of the NHDES Dam Bureau, ensuring state-regulated permitting, inspection, and enforcement to maintain its structural integrity.
The condition assessment of Troy Sewage Lagoons Dam is deemed satisfactory as of the last inspection in August 2017, with a significant hazard potential. Despite its lack of a spillway, the dam's risk assessment is classified as high, highlighting the importance of risk management measures. The dam's emergency action plan status and inundation maps preparedness are currently unspecified, indicating potential areas for improvement to enhance emergency response and public safety in case of a breach or failure event.
For water resource and climate enthusiasts, Troy Sewage Lagoons Dam presents a unique case study in dam infrastructure management within the New England District. With its specific design features and regulatory oversight by NHDES, the dam exemplifies the intersection of environmental conservation and public safety considerations. Further research and monitoring of this dam could provide valuable insights into sustainable water resource management practices and climate resilience strategies in the region.
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 Troy Sewage Lagoons Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| S Br Ashuelot River At Webb | 25 cfs | → |
| Ashuelot River Above The Branch | 21 cfs | → |
| Ashuelot River At West Swanzey | 598 cfs | → |
| Otter Brook Below Otter Brook Dam | 12 cfs | → |
| Nubanusit Bk Blw Macdowell Dam Nr Peterborough Nh | 31 cfs | → |
| Priest Brook Near Winchendon | 33 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Troy Sewage Lagoons Dam.
Boat launches
- Perkins Pond Boat Launch
- Meetinghouse Pond Boat Launch
- Stone Pond Boat Launch
- Wilson Pond Boat Launch
- Swanzey Lake Boat Launch
- Thorndike Pond Boat Launch
Campgrounds
- Swanzey Lake Camping Area
- Pilgrim Pines Camping Area
- Mt Monadnock State Park Campground
- Camp Wanocksett
- Falls Brook Shelter
- Wheelock Park Campground
Paddle runs
- First Bridge Upstream On Route 100 To Confluence With West River
- Headwaters To First Bridge Upstream On Route 100
- Headwaters To Confluence With West River (End Of Sherman Road)
- Headwaters To North Of Searsburg Reservoir
- Sewall's Island To Manchester Street Bridge
- End Of Kendall Farm Road To Confluence With West River
Track Troy Sewage Lagoons 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.
About Troy Sewage Lagoons Dam
Where does the data for Troy Sewage Lagoons 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 Significant 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 Troy Sewage Lagoons Dam.