New England District Corps of Engineers
Geotech Action Status
March 23, 2025 01:05 AM
Legend: Warning Action Required
Project Drain. Area
(sq. mi.)
Invert Elev.
(ft NGVD)
Date/Time Pool
(ft)
6-Hr Change
(ft)
24-Hr Pred.
Stage (ft)
Daily Project
Inspection Level
Precip.
24-Hr (in)
Precip.
48-Hr (in)
Geotech
Recon. Level
Geotech
Recon. % Full
Normal Pool Spillway
UPPER CONNECTICUT RIVER BASIN
Basin Regulator: Margaret DiGiorno
Ball Mountain Dam 172 805.5 23 Mar 01:00 am 45.66 1.02 n/a 75 .21 .49 150.0 36.0 65 Feet (Summer), 35 Feet (Winter) 211.5
North Hartland Dam 220 390 23 Mar 01:00 am 37.69 -.02 37.3 50 .00 .39 129.0 64.0 35 Feet 156.5
North Springfield Dam 158 452 23 Mar 12:30 am 16.66 -.05 16.6 45 .02 .30 68.0 50.0 15 Feet 93.5
Otter Brook Dam 47 683 23 Mar 01:00 am 38.46 -.92 34.5 32 .05 .44 87.0 80.0 20 Feet (Summer), 21 Feet (Winter) 98
Surry Mountain Dam 100 485 23 Mar 01:00 am 27.49 -.59 25.0 25 .08 .56 57.0 77.0 15 Feet (Summer), 18 Feet (Winter) 65
Townshend Dam 278 457 23 Mar 01:00 am 25.07 .27 25.1 32 .09 .33 72.0 50.0 21 Feet 96
Union Village Dam 126 420 23 Mar 01:00 am 23.52 -.07 23.2 35 .01 .48 90.0 26.0 0 Feet (Summer), 20 Feet (Winter) 144
LOWER CONNECTICUT RIVER BASIN
Basin Regulator: Peter Upham
Barre Falls Dam 55 761 23 Mar 01:00 am 777.14 -.47 n/a 790 .04 .29 797.0 50.0 772 Feet (Summer), 776 Feet (Winter) 807
Birch Hill Dam 175 815 23 Mar 12:30 am 8.48 -.17 7.8 14 .11 .63 25.0 41.0 0 Feet 37
Conant Brook Dam 8 693 23 Mar 12:30 am 1.58 -.04 1.4 16 .00 .24 27.0 15.0 0 Feet 64
Colebrook Dam 118 575 23 Mar 01:00 am 682.87 .10 n/a 718 .06 .23 739.0 55.0 708 Feet NGVD (Normal), 714.5 Feet (Spring) 761
Knightville Dam 162 480 23 Mar 01:00 am 60.49 -1.39 n/a 60 .04 .23 125.0 90.0 0 Feet (Summer), 35 Feet (Winter) 130
Littleville Dam 52 486.5 23 Mar 12:30 am 519.76 -.06 519.5 528 .07 .29 549.0 46.0 518 Feet NGVD 576
Mad River Dam 18 855 23 Mar 12:30 am 17.20 .05 17.4 n/a n/a n/a n/a n/a 17 Feet 128
Sucker Brook Dam 3 881 23 Mar 12:30 am .70 .00 .0 n/a n/a n/a n/a n/a 0 Feet 54
Tully Dam 50 625 23 Mar 01:00 am 11.84 -.18 11.1 25 .05 .51 32.0 49.0 16 Feet (Summer), 13 Feet (Winter) 43
MERRIMACK RIVER BASIN
Basin Regulator: Laura Fraser
Blackwater Dam 128 515 23 Mar 12:30 am 528.72 -.45 526.8 540 .03 .28 561.0 72.0 516 Feet NGVD 566
Edward Macdowell Dam 44 904 23 Mar 01:00 am 916.17 -.30 915.0 918 .05 .46 929.0 39.0 911.5 Feet NGVD 946
Everett Dam 64 325 23 Mar 01:00 am 342.42 .00 342.4 347 .01 .01 375.0 8.0 340.5 Feet NGVD 418
Franklin Falls Dam 1000 300 23 Mar 12:30 am 315.13 -.87 311.5 320 .01 .42 375.0 73.0 307 Feet NGVD 389
Hopkinton Dam 426 366 23 Mar 01:00 am 383.72 -.31 n/a 388 .07 .57 395.0 19.0 380 Feet NGVD(Summer), 382 Feet NGVD(Winter) 416
NAUGATUCK RIVER BASIN
Basin Regulator: Laura Fraser
Black Rock Dam 20 410 23 Mar 12:30 am 27.38 .03 27.4 45 .00 .22 80.0 44.0 27 Feet 110
East Branch Dam 9 798 23 Mar 12:30 am 1.51 .00 1.1 n/a n/a n/a n/a n/a 0 Feet 67
Hop Brook Dam 16 292 23 Mar 01:00 am 19.53 .00 n/a 30 .00 .18 45.0 25.0 18.5 Feet 72
Hancock Brook Dam 12 454 23 Mar 12:30 am 7.51 .00 7.5 17 n/a n/a 23.0 56.0 7 Feet 30
Hall Meadow Dam 17 850 23 Mar 12:30 am 9.77 -.02 9.7 n/a n/a n/a n/a n/a 9 Feet 48
Northfield Brook Dam 6 480.5 23 Mar 12:30 am 21.06 -.16 .0 30 n/a n/a 61.0 30.0 22.5 Feet 95.5
Thomaston Dam 97 380 23 Mar 12:30 am 6.83 -.17 6.1 40 .00 .22 76.0 35.0 0 Feet 114
THAMES RIVER BASIN
Basin Regulator: Stephen Kissock, P.E.
Buffumville Dam 27 481.5 23 Mar 12:30 am 10.49 .03 10.6 19 .02 .16 27.5 40.0 11 Feet 42.5
East Brimfield Dam 67 619 23 Mar 01:00 am 15.15 .08 15.5 16 .01 .10 23.0 31.0 13 Feet 34
Hodges Village Dam 31 465.5 23 Mar 01:00 am 4.91 -.05 4.7 15 .02 .08 19.0 27.0 0 Feet 35.5
Mansfield Hollow Dam 159 195 23 Mar 12:30 am 18.71 .02 18.8 25 .00 .10 40.0 35.0 16.5 Feet (Summer), 15 Feet (Winter), 18.5 Feet (Spring) 62
West Thompson Dam 172 292 23 Mar 01:00 am 14.97 -.02 14.9 20 .00 .09 37.0 46.0 15 Feet 50.5
Westville Dam 99 515 23 Mar 01:00 am 11.60 -.01 11.6 20 .00 .07 35.0 15.0 10.5 Feet 57
BLACKSTONE RIVER BASIN
Basin Regulator: Stephen Kissock, P.E.
Woonsocket Falls Dam 369 23 Mar 12:30 am .28 .01 n/a n/a .00 .19 n/a n/a 0 Feet n/a
West Hill Dam 28 234 23 Mar 12:30 am 3.23 -.03 3.1 15 .00 .23 19.0 34.0 2 Feet 30