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Middlesex, Connecticut: records in the National Inventory of Dams

Middlesex, Connecticut had 119 records in the inventory, 17 of them high hazard, as of October 30, 2026, according to the National Inventory of Dams.

A count is of records, which include the separate structures recorded with a dam.

Middlesex, Connecticut, October 2026

17
High-hazard records
October 2026
7th of 8 counties the NID names in Connecticut; 14.3% of the county’s 119 records. A hazard class is not a risk.
17
High hazard, condition published
October 2026
1 rated Poor or Unsatisfactory.
0
High hazard, condition not published
October 2026
0 not provided to the NID, 0 with no condition assessment in its file.

Records by hazard class

1 more column on a wider screen

The 119 records the NID places in Middlesex, Connecticut, by the hazard class the responsible agency assigned, October 2026. A class is the consequence of a failure, not its likelihood.
Hazard classRecords
High17
Significant99
Low3
Undetermined0

Every record in Middlesex

High hazard first, then by Federal ID. Each opens the record’s own page, with every field the NID publishes for it. Names are the NID’s, as printed.

2 more columns on a wider screen

The 119 records the National Inventory of Dams lists in Middlesex, Connecticut, with the hazard class and the condition assessment of each, as of October 30, 2026
Federal IDDam nameHazard class
CT00138Crystal Lake DamHigh
CT00139Adder ReservoirHigh
CT00140Mount Higby Reservoir DamHigh
CT00142Dooley Pond DamHigh
CT00149Portland Reservoir DamHigh
CT00382Laurel Brook Reservoir DamHigh
CT00392Messerschmidt Pond DamHigh
CT00393Wrights Pond DamHigh
CT00396Jennings Pond DamHigh
CT00398Pattaconk Reservoir DamHigh
CT00401Killingworth Reservoir DamHigh
CT00414Obed Heights Reservoir DamHigh
CT00423Mill Pond DamHigh
CT00426Bushy Hill Pond DamHigh
CT00430Higganum Reservoir DamHigh
CT00431Scovill Reservoir DamHigh
CT00662Leesville DamHigh
CT00141Upper Mill Pond DamSignificant
CT00143Asylum Reservoir #2 DamSignificant
CT00144Asylum Reservoir Dam #6Significant
CT00145Pameacha Pond DamSignificant
CT00146Starr Mill Pond DamSignificant
CT00148Asylum Reservoir #5 DamSignificant
CT00150Great Hill Pond DamSignificant
CT00151Kelsey Pond DamSignificant
CT00350Moodus Reservoir DamSignificant
CT00352Lake Hayward DamSignificant
CT00353Johnson Millpond DamSignificant
CT00354Bashan Lake DamSignificant
CT00355Pickerel Lake DamSignificant
CT00356Berlin Fish & Game DamSignificant
CT00357Peck's Meadow Pond DamSignificant
CT00360Bevins Pond DamSignificant
CT00362Lake Pocotopaug DamSignificant
CT00381Lake Beseck DamSignificant
CT00383Miller Pond DamSignificant
CT00384Arrigoni Pond DamSignificant
CT00385Ymca Camp Farnam Pond DamSignificant
CT00389Kelseytown Reservoir DamSignificant
CT00391Lochwood Lake DamSignificant
CT00394Deep Hollow Reservoir DamSignificant
CT00395Deuses Pond DamSignificant
CT00397Waterhouse Pond DamSignificant
CT00402Tetram Pond DamSignificant
CT00403Schreeder Pond DamSignificant
CT00404Deer Lake DamSignificant
CT00405Lower Murray Pond DamSignificant
CT00406Kroupa Pond DamSignificant
CT00407Foster Pond DamSignificant
CT00415Chalkers Millpond DamSignificant
CT00425Birch Mill Pond DamSignificant
CT00427Pratt Read DamSignificant
CT00428Rogers Pond DamSignificant
CT00434Hidden Lake DamSignificant
CT00518Boulder Lake DamSignificant
CT00564Butternut Hollow Pond DamSignificant
CT00772Schriber Park (Great Brook Dam)Significant
CT00774Pattaconk Dam #3Significant
CT00775Great Brook Dam #1Significant
CT00776Griswold Pond #2 DamSignificant
CT00777Upper Pond Dam #1Significant
CT00778Old Mill Pond DamSignificant
CT00804Chestnut Brook DamSignificant
CT00819Drop Pond DamSignificant
CT00837Brownell Pond DamSignificant
CT00840Trouble Pond DamSignificant
CT00842Post Pond DamSignificant
CT00845J B Taylor DamSignificant
CT00852Sportsmen Pond DamSignificant
CT00859Urban Pond DamSignificant
CT00862Artistic Wire Company Pond DamSignificant
CT00864State Park Pond DamSignificant
CT00881Tiffany Brook Pond DamSignificant
CT00963Bell Shop DamSignificant
CT01061Wadsworth Falls Dam #2Significant
CT01062Gunsight Pond DamSignificant
CT01063Coginchaug River Dam #1Significant
CT01069Zoar Pond DamSignificant
CT01070Spring Street DamSignificant
CT01072West Swamp Brook Dam (Gilbert)Significant
CT01073Dolan's PondSignificant
CT01511Little City PondSignificant
CT01531Turkey Hill Reservoir DamSignificant
CT01548Black Shop Pond DamSignificant
CT01554Cockaponset Pond DamSignificant
CT01567Asylum Reservoir #1 DamSignificant
CT01568Asylum Reservoir #4 DamSignificant
CT01600Turnpike Pond DamSignificant
CT01755Cedar Lake DamSignificant
CT01761Pearson Pond DamSignificant
CT01769Useful Pond DamSignificant
CT01770Durham Rod & Gun Club DamSignificant
CT01771Will Cone Pond DamSignificant
CT01772Gillette Castle DamSignificant
CT01773Pizzini Pond DamSignificant
CT01774Hedlund PondSignificant
CT01775Gates PondSignificant
CT01776Bochain PondSignificant
CT01777Gillette Castle Goldfish Pond DamSignificant
CT01778Gillette Castle Bridge Pond DamSignificant
CT01779Nelson Gustine DamSignificant
CT01780Markham Pond DamSignificant
CT01781Wopowog Pond DamSignificant
CT01782Hurd Park Pond Aka Carlson Pond DamSignificant
CT01783Wallien PondSignificant
CT01784Camp Ramah Upper PondSignificant
CT01788Ivoryton Pond (Aka Washburn) DamSignificant
CT01806Dunham PondSignificant
CT01807Bartman Road Pond DamSignificant
CT01808Staba PondSignificant
CT01824Upper Murray Pond DamSignificant
CT01834Miner Pond DamSignificant
CT01835Heinrich Pond DamSignificant
CT01836Westfield Falls Aka Upper Pond DamSignificant
CT01937Beaver Meadow DamSignificant
CT05003Deraad Pond DamSignificant
CT00390Upper Mill Pond DamLow
CT00424Comstock Pond DamLow
CT00429Tower Hill Lake DamLow

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The immigration link above is EOIR’s courts, which sit in this state. CBP’s encounters are not by state and will not be: its sectors and field offices are areas of responsibility rather than a geography, and assigning them to states would be a claim the data does not make. Immigration and the border.

More about Connecticut →

Sources

Compiled automatically from National Inventory of Dams — national CSV by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved