Mackville Pond dam
Mackville Pond
Mackville Pond, located in Hardwick, Vermont, is a picturesque reservoir with a primary purpose of recreation. Built in 1900, this masonry dam stands at 18 feet high and spans 80 feet in length, creating a storage capacity of 208 acre-feet. Surrounded by a surface area of 12 acres and draining a watershed of 10.7 square miles, the dam on Nichols Brook provides both beauty and utility to the local community.
Despite its age, Mackville Pond's dam is in fair condition with a high hazard potential, prompting regular inspections by the Vermont Department of Environmental Conservation. The dam has a history of modifications and is well-regulated and enforced by state authorities. With its stunning natural surroundings and recreational opportunities, Mackville Pond serves as a vital water resource for the region, inviting visitors to appreciate the intersection of human infrastructure and environmental conservation.
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 Mackville Pond -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Pope Brook (Site W-3) Nr. N. Danville | 10 cfs | → |
| Sleepers River (Site W-5) Near St. Johnsbury | 99 cfs | → |
| North Branch Winooski River At Wrightsville | 388 cfs | → |
| Lamoille River At Johnson | 889 cfs | → |
| Passumpsic River At Passumpsic | 1,170 cfs | → |
| Winooski River At Montpelier | 1,320 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mackville Pond.
Boat launches
- Wolcott Pond Road Wolcott
- North Pond Road Walden
- Nelson Pond Road Woodbury
- G A R Road 285, Calais
- Molly's Pond Boat Launch
- Justa Road Calais
Campgrounds
Paddle runs
- Headwaters To Folsom Brook
- Headwaters At Profile Lake To Southern Boundary Of Franconia Notch State Park
- Proclamation Boundary To Proclamation Boundary
- Confluence With Alder Creek To Confluence With Middlebury River
- Woodstock/Thornton Town Line To Thornton Railroad Bridge
- Source Above Fr 55 To Proclamation Boundary (Stony Brook)
More reservoirs
Track Mackville Pond 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 Mackville Pond
Where does the data for Mackville Pond 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 High 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 Mackville Pond.