Sargent Center Infiltration Lagoon dam
Sargent Center Infiltration Lagoon
The Sargent Center Infiltration Lagoon in Hancock, New Hampshire is a privately owned structure regulated by the NHDES Dam Bureau. This Earth dam stands at a height of 11.1 feet and is primarily used for infiltration purposes. With a storage capacity of 5 acre-feet and a normal storage of 2.5 acre-feet, this lagoon plays a crucial role in managing water resources in the area.
Despite not having a spillway, this lagoon has a significant hazard potential and is considered to have a high risk level according to assessments. The condition assessment is not rated, indicating the need for further evaluation. With a last inspection date in October 2020 and an inspection frequency of 4 times a year, it is clear that the safety and functionality of the Sargent Center Infiltration Lagoon are regularly monitored to ensure its effectiveness in water management and climate adaptation efforts in the region.
Located in close proximity to the New England and New York Districts of the US Army Corps of Engineers, this lagoon serves as a vital piece of infrastructure in the water resource management network. As climate change continues to impact water availability and quality, structures like the Sargent Center Infiltration Lagoon play a crucial role in ensuring sustainable water use and resilience to changing climate conditions in the Hillsborough County, New Hampshire area.
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 Sargent Center Infiltration Lagoon -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Nubanusit Bk Blw Macdowell Dam Nr Peterborough Nh | 31 cfs | → |
| Contoocook River At Peterborough | 107 cfs | → |
| North Branch River Near Antrim | 61 cfs | → |
| S Br Ashuelot River At Webb | 25 cfs | → |
| Otter Brook Below Otter Brook Dam | 12 cfs | → |
| Ashuelot River Above The Branch | 21 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Sargent Center Infiltration Lagoon.
Boat launches
- Macdowell Reservoir Boat Launch
- Norway Pond Boat Launch
- Contoocook River (Powder Mill Pond) Boat Launch
- Frost Pond Boat Launch
- Harrisville Pond Boat Launch
- Dublin Pond Boat Launch
Campgrounds
- Camp Wanocksett
- Mt Monadnock State Park Campground
- Fox Brook Tent Site
- Wheelock Park Campground
- Pilgrim Pines Camping Area
- Swanzey Lake Camping Area
Paddle runs
- Sewall's Island To Manchester Street Bridge
- First Bridge Upstream On Route 100 To Confluence With West River
- Begins In Franklin To Sewall's Island
- Headwaters To First Bridge Upstream On Route 100
- Headwaters To Confluence With West River (End Of Sherman Road)
- Headwaters To Crossing Of Route 100 Near Route 155
Track Sargent Center Infiltration 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 Sargent Center Infiltration Lagoon
Where does the data for Sargent Center Infiltration 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 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 Sargent Center Infiltration Lagoon.