| Mansfield Hollow Dam, Natchaug River | |||||||||
| Drainage Area: | 159 sq. miles | ||||||||
| Channel Capacity: | 2,900 cfs | ||||||||
| Storage at Spillway Crest: | 5.8 in / 52,000 ac-ft | ||||||||
| Normal Pool: | 16.5 Feet (Summer), 15 Feet (Winter), 18.5 Feet (Spring) | ||||||||
| Gate Settings for November 17, 2025 07:00 am | Gate 1 | Gate 2 | Gate 3 | Gate 4 | Gate 5 | Gate 6 | Gate 7 | Gate 8 | |
| 2.0 | 0.0 | 1.0 | 0.0 | 0.0 | |||||
| Date Time (EST) | Pool (ft) |
Storage (%) |
Storage (ac-ft) |
Tailwater (ft) |
Flow (cfs) |
Inflow (cfs) |
Inflow Test (cfs) |
Precip (in) |
Air Temp (F) |
| Nov-17 09:30 pm | 16.96 | 0.4 | 2,984 | 2.40 | 201 | 209 | 8.09 | 39.6 | |
| Nov-17 08:30 pm | 16.96 | 0.4 | 2,984 | 2.41 | 203 | 217 | 186 | 8.09 | 39.4 |
| Nov-17 07:30 pm | 16.96 | 0.4 | 2,984 | 2.40 | 201 | 216 | 188 | 8.09 | 39.6 |
| Nov-17 06:30 pm | 16.96 | 0.4 | 2,984 | 2.40 | 201 | 215 | 191 | 8.09 | 39.2 |
| Nov-17 05:30 pm | 16.95 | 0.4 | 2,980 | 2.40 | 201 | 214 | 194 | 8.09 | 39.6 |
| Nov-17 04:30 pm | 16.95 | 0.4 | 2,980 | 2.40 | 201 | 221 | 197 | 8.09 | 40.5 |
| Nov-17 03:30 pm | 16.95 | 0.4 | 2,980 | 2.40 | 201 | 220 | 199 | 8.09 | 41.8 |
| Nov-17 02:30 pm | 16.94 | 0.4 | 2,976 | 2.39 | 199 | 219 | 202 | 8.09 | 42.1 |
| Nov-17 01:30 pm | 16.94 | 0.4 | 2,976 | 2.39 | 199 | 226 | 206 | 8.09 | 41.3 |
| Nov-17 12:30 pm | 16.94 | 0.4 | 2,976 | 2.38 | 197 | 233 | 210 | 8.09 | 40.6 |
| Nov-17 11:30 am | 16.93 | 0.3 | 2,972 | 2.36 | 193 | 231 | 215 | 8.09 | 41.0 |
| Nov-17 10:30 am | 16.92 | 0.3 | 2,968 | 2.36 | 193 | 238 | 216 | 8.09 | 39.9 |
| Nov-17 09:30 am | 16.92 | 0.3 | 2,968 | 2.35 | 191 | 245 | 217 | 8.09 | 38.6 |
| Nov-17 08:30 am | 16.91 | 0.3 | 2,964 | 2.36 | 193 | 243 | 222 | 8.09 | 37.4 |
| Nov-17 07:30 am | 16.90 | 0.3 | 2,960 | 2.34 | 189 | 249 | 224 | 8.09 | 36.3 |
| Nov-17 06:30 am | 16.89 | 0.3 | 2,956 | 2.33 | 187 | 256 | 229 | 8.09 | 35.8 |
| Nov-17 05:30 am | 16.88 | 0.3 | 2,952 | 2.33 | 187 | 262 | 228 | 8.09 | 35.9 |
| Nov-17 04:30 am | 16.86 | 0.3 | 2,944 | 2.31 | 183 | 260 | 239 | 8.09 | 35.3 |
| Nov-17 03:30 am | 16.85 | 0.3 | 2,940 | 2.32 | 185 | 267 | 241 | 8.09 | 35.6 |
| Nov-17 02:30 am | 16.84 | 0.3 | 2,936 | 2.30 | 181 | 281 | 244 | 8.09 | 36.6 |
| Nov-17 01:30 am | 16.82 | 0.3 | 2,928 | 2.29 | 179 | 280 | 251 | 8.09 | 37.7 |
| Nov-17 12:30 am | 16.80 | 0.2 | 2,920 | 2.28 | 177 | 287 | 260 | 8.09 | 37.6 |
| Nov-16 11:30 pm | 16.78 | 0.2 | 2,912 | 2.27 | 175 | 286 | 262 | 8.09 | 37.8 |
| Nov-16 10:30 pm | 16.76 | 0.2 | 2,904 | 2.27 | 175 | 293 | 268 | 8.09 | 38.8 |
| Nov-16 09:30 pm | 16.74 | 0.2 | 2,896 | 2.26 | 174 | 300 | 275 | 8.09 | 39.0 |
| Maximum 24 Hour Drawdown Rate (5 feet/day): 975 cfs + Inflow (209 cfs) = 1,184 cfs | |||||||||
| Report Generated November 17, 2025 10:17 pm | |||||||||