Larrys Pond Dam dam
Larrys Pond Dam
Larrys Pond Dam, located in Richmond, New Hampshire, is a private-owned earth dam primarily used for recreation purposes. Built in 1970, the dam stands at a height of 18.5 feet and has a storage capacity of 100 acre-feet, with a normal storage level of 70 acre-feet. The dam is situated on TR Tully Brook and is regulated by the NHDES Dam Bureau.
Despite being classified as having low hazard potential, Larrys Pond Dam has a moderate risk rating of 3. The dam has not been rated for its condition assessment, but it undergoes inspections every 6 years with the last one conducted in December 2016. The dam does not have an Emergency Action Plan prepared, and its inundation maps and risk management measures are not specified.
Overall, Larrys Pond Dam serves as a vital recreational resource in the area while also embodying a moderate level of risk due to its condition and lack of certain emergency preparedness measures. As climate change continues to impact water resources, ensuring the safety and maintenance of dams like Larrys Pond Dam becomes increasingly important for water resource and climate enthusiasts.
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 Larrys Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| S Br Ashuelot River At Webb | 25 cfs | → |
| Priest Brook Near Winchendon | 33 cfs | → |
| East Branch Tully River Near Athol | 5 cfs | → |
| Millers River Near Winchendon | 121 cfs | → |
| Ashuelot River At West Swanzey | 598 cfs | → |
| Millers River At South Royalston | 39 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Larrys Pond Dam.
Boat launches
- Laurel Lake Boat Launch
- Swanzey Lake Boat Launch
- Perkins Pond Boat Launch
- Doane Hill Road Royalston
- Meetinghouse Pond Boat Launch
- Pool Pond Boat Launch
Campgrounds
- Falls Brook Shelter
- Swanzey Lake Camping Area
- Pilgrim Pines Camping Area
- Tully Lake
- North Dennison Camping Area
- Mt Monadnock State 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
- Stamford Town Line To Confluence With City Stream
- End Of Kendall Farm Road To Confluence With West River
Track Larrys Pond 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 Larrys Pond Dam
Where does the data for Larrys Pond 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 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 Larrys Pond Dam.