MERRIMACK R NR GOFFS FALLS, BELOW MANCHESTER, NH
USGS 01092000 · New Hampshire · reports discharge (live), gauge height
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USGS 01092000 · New Hampshire · reports discharge (live), gauge height
What the agencies suggest
Carry a pocket thermometer to monitor water temperatureNational Park Service
General guidance from the readings and the published lines named above, not a fishing forecast. Local rules and closures come first.
Reading Nov 5, 8:30 PM EST · provisional USGS data
Below normal for Nov 5 Steady · 24 h Below NWS action stage
Discharge, last 7 days: 169 readings from Oct 29, 9:30 PM EDT to Nov 5, 8:30 PM EST; ranging 1,040 to 1,620 ft³/s; latest 1,490 ft³/s; shaded band: typical range (25th–75th percentile) for each date.
USGS provisional data may be revised. Source: USGS instantaneous values.
| Time | Discharge (ft³/s) | Gauge height (ft) | Normal, 25th–75th (ft³/s) |
|---|---|---|---|
| Nov 5, 8:30 PM EST | 1,490 | 3.33 | 2,240–6,140 |
| Nov 5, 7:30 PM EST | 1,390 | 3.26 | 2,240–6,140 |
| Nov 5, 6:30 PM EST | 1,220 | 3.12 | 2,240–6,140 |
| Nov 5, 5:30 PM EST | 1,150 | 3.06 | 2,240–6,140 |
| Nov 5, 4:30 PM EST | 1,100 | 3.01 | 2,240–6,140 |
| Nov 5, 3:30 PM EST | 1,080 | 3 | 2,240–6,140 |
| Nov 5, 2:30 PM EST | 1,080 | 3 | 2,240–6,140 |
| Nov 5, 1:30 PM EST | 1,100 | 3.01 | 2,240–6,140 |
| Nov 5, 12:30 PM EST | 1,230 | 3.13 | 2,240–6,140 |
| Nov 5, 11:30 AM EST | 1,340 | 3.22 | 2,240–6,140 |
| Nov 5, 10:30 AM EST | 1,330 | 3.21 | 2,240–6,140 |
| Nov 5, 9:30 AM EST | 1,260 | 3.15 | 2,240–6,140 |
| Nov 5, 8:30 AM EST | 1,220 | 3.12 | 2,240–6,140 |
| Nov 5, 7:30 AM EST | 1,230 | 3.13 | 2,240–6,140 |
| Nov 5, 6:30 AM EST | 1,260 | 3.15 | 2,240–6,140 |
| Nov 5, 5:30 AM EST | 1,260 | 3.15 | 2,240–6,140 |
| Nov 5, 4:30 AM EST | 1,210 | 3.11 | 2,240–6,140 |
| Nov 5, 3:30 AM EST | 1,120 | 3.03 | 2,240–6,140 |
| Nov 5, 2:30 AM EST | 1,040 | 2.96 | 2,240–6,140 |
| Nov 5, 1:30 AM EST | 1,040 | 2.96 | 2,240–6,140 |
| Nov 5, 12:30 AM EST | 1,050 | 2.97 | 2,240–6,140 |
| Nov 4, 11:30 PM EST | 1,100 | 3.01 | 2,010–6,210 |
| Nov 4, 10:30 PM EST | 1,160 | 3.07 | 2,010–6,210 |
| Nov 4, 9:30 PM EST | 1,320 | 3.2 | 2,010–6,210 |
| Nov 4, 8:30 PM EST | 1,550 | 3.38 | 2,010–6,210 |
| Nov 4, 7:30 PM EST | 1,620 | 3.43 | 2,010–6,210 |
| Nov 4, 6:30 PM EST | 1,410 | 3.27 | 2,010–6,210 |
| Nov 4, 5:30 PM EST | 1,250 | 3.14 | 2,010–6,210 |
| Nov 4, 4:30 PM EST | 1,180 | 3.08 | 2,010–6,210 |
| Nov 4, 3:30 PM EST | 1,150 | 3.06 | 2,010–6,210 |
| Nov 4, 2:30 PM EST | 1,130 | 3.04 | 2,010–6,210 |
| Nov 4, 1:30 PM EST | 1,140 | 3.05 | 2,010–6,210 |
| Nov 4, 12:30 PM EST | 1,180 | 3.08 | 2,010–6,210 |
| Nov 4, 11:30 AM EST | 1,180 | 3.08 | 2,010–6,210 |
| Nov 4, 10:30 AM EST | 1,160 | 3.07 | 2,010–6,210 |
| Nov 4, 9:30 AM EST | 1,150 | 3.06 | 2,010–6,210 |
| Nov 4, 8:30 AM EST | 1,140 | 3.05 | 2,010–6,210 |
| Nov 4, 7:30 AM EST | 1,120 | 3.03 | 2,010–6,210 |
| Nov 4, 6:30 AM EST | 1,120 | 3.03 | 2,010–6,210 |
| Nov 4, 5:30 AM EST | 1,120 | 3.03 | 2,010–6,210 |
| Nov 4, 4:30 AM EST | 1,140 | 3.05 | 2,010–6,210 |
| Nov 4, 3:30 AM EST | 1,160 | 3.07 | 2,010–6,210 |
| Nov 4, 2:30 AM EST | 1,220 | 3.12 | 2,010–6,210 |
| Nov 4, 1:30 AM EST | 1,250 | 3.14 | 2,010–6,210 |
| Nov 4, 12:30 AM EST | 1,250 | 3.14 | 2,010–6,210 |
| Nov 3, 11:30 PM EST | 1,330 | 3.21 | 1,890–5,880 |
| Nov 3, 10:30 PM EST | 1,340 | 3.22 | 1,890–5,880 |
| Nov 3, 9:30 PM EST | 1,320 | 3.2 | 1,890–5,880 |
| Nov 3, 8:30 PM EST | 1,280 | 3.17 | 1,890–5,880 |
| Nov 3, 7:30 PM EST | 1,230 | 3.13 | 1,890–5,880 |
| Nov 3, 6:30 PM EST | 1,210 | 3.11 | 1,890–5,880 |
| Nov 3, 5:30 PM EST | 1,210 | 3.11 | 1,890–5,880 |
| Nov 3, 4:30 PM EST | 1,210 | 3.11 | 1,890–5,880 |
| Nov 3, 3:30 PM EST | 1,210 | 3.11 | 1,890–5,880 |
| Nov 3, 2:30 PM EST | 1,210 | 3.11 | 1,890–5,880 |
| Nov 3, 1:30 PM EST | 1,210 | 3.11 | 1,890–5,880 |
| Nov 3, 12:30 PM EST | 1,210 | 3.11 | 1,890–5,880 |
| Nov 3, 11:30 AM EST | 1,210 | 3.11 | 1,890–5,880 |
| Nov 3, 10:30 AM EST | 1,210 | 3.11 | 1,890–5,880 |
| Nov 3, 9:30 AM EST | 1,210 | 3.11 | 1,890–5,880 |
| Nov 3, 8:30 AM EST | 1,200 | 3.1 | 1,890–5,880 |
| Nov 3, 7:30 AM EST | 1,160 | 3.07 | 1,890–5,880 |
| Nov 3, 6:30 AM EST | 1,120 | 3.03 | 1,890–5,880 |
| Nov 3, 5:30 AM EST | 1,110 | 3.02 | 1,890–5,880 |
| Nov 3, 4:30 AM EST | 1,140 | 3.05 | 1,890–5,880 |
| Nov 3, 3:30 AM EST | 1,210 | 3.11 | 1,890–5,880 |
| Nov 3, 2:30 AM EST | 1,230 | 3.13 | 1,890–5,880 |
| Nov 3, 1:30 AM EST | 1,230 | 3.13 | 1,890–5,880 |
| Nov 3, 12:30 AM EST | 1,230 | 3.13 | 1,890–5,880 |
| Nov 2, 11:30 PM EST | 1,230 | 3.13 | 1,880–5,770 |
| Nov 2, 10:30 PM EST | 1,230 | 3.13 | 1,880–5,770 |
| Nov 2, 9:30 PM EST | 1,220 | 3.12 | 1,880–5,770 |
| Nov 2, 8:30 PM EST | 1,210 | 3.11 | 1,880–5,770 |
| Nov 2, 7:30 PM EST | 1,190 | 3.09 | 1,880–5,770 |
| Nov 2, 6:30 PM EST | 1,190 | 3.09 | 1,880–5,770 |
| Nov 2, 5:30 PM EST | 1,190 | 3.09 | 1,880–5,770 |
| Nov 2, 4:30 PM EST | 1,190 | 3.09 | 1,880–5,770 |
| Nov 2, 3:30 PM EST | 1,200 | 3.1 | 1,880–5,770 |
| Nov 2, 2:30 PM EST | 1,210 | 3.11 | 1,880–5,770 |
| Nov 2, 1:30 PM EST | 1,210 | 3.11 | 1,880–5,770 |
| Nov 2, 12:30 PM EST | 1,250 | 3.14 | 1,880–5,770 |
| Nov 2, 11:30 AM EST | 1,280 | 3.17 | 1,880–5,770 |
| Nov 2, 10:30 AM EST | 1,340 | 3.22 | 1,880–5,770 |
| Nov 2, 9:30 AM EST | 1,370 | 3.24 | 1,880–5,770 |
| Nov 2, 8:30 AM EST | 1,370 | 3.24 | 1,880–5,770 |
| Nov 2, 7:30 AM EST | 1,370 | 3.24 | 1,880–5,770 |
| Nov 2, 6:30 AM EST | 1,360 | 3.23 | 1,880–5,770 |
| Nov 2, 5:30 AM EST | 1,330 | 3.21 | 1,880–5,770 |
| Nov 2, 4:30 AM EST | 1,280 | 3.17 | 1,880–5,770 |
| Nov 2, 3:30 AM EST | 1,260 | 3.15 | 1,880–5,770 |
| Nov 2, 2:30 AM EST | 1,280 | 3.17 | 1,880–5,770 |
| Nov 2, 1:30 AM EST | 1,340 | 3.22 | 1,880–5,770 |
| Nov 2, 12:30 AM EST | 1,390 | 3.26 | 1,880–5,770 |
| Nov 1, 11:30 PM EST | 1,380 | 3.25 | 1,800–5,380 |
| Nov 1, 10:30 PM EST | 1,380 | 3.25 | 1,800–5,380 |
| Nov 1, 9:30 PM EST | 1,360 | 3.23 | 1,800–5,380 |
| Nov 1, 8:30 PM EST | 1,290 | 3.18 | 1,800–5,380 |
| Nov 1, 7:30 PM EST | 1,210 | 3.11 | 1,800–5,380 |
| Nov 1, 6:30 PM EST | 1,200 | 3.1 | 1,800–5,380 |
| Nov 1, 5:30 PM EST | 1,230 | 3.13 | 1,800–5,380 |
| Nov 1, 4:30 PM EST | 1,290 | 3.18 | 1,800–5,380 |
| Nov 1, 3:30 PM EST | 1,340 | 3.22 | 1,800–5,380 |
| Nov 1, 2:30 PM EST | 1,340 | 3.22 | 1,800–5,380 |
| Nov 1, 1:30 PM EST | 1,320 | 3.2 | 1,800–5,380 |
| Nov 1, 12:30 PM EST | 1,280 | 3.17 | 1,800–5,380 |
| Nov 1, 11:30 AM EST | 1,220 | 3.12 | 1,800–5,380 |
| Nov 1, 10:30 AM EST | 1,200 | 3.1 | 1,800–5,380 |
| Nov 1, 9:30 AM EST | 1,250 | 3.14 | 1,800–5,380 |
| Nov 1, 8:30 AM EST | 1,340 | 3.22 | 1,800–5,380 |
| Nov 1, 7:30 AM EST | 1,390 | 3.26 | 1,800–5,380 |
| Nov 1, 6:30 AM EST | 1,370 | 3.24 | 1,800–5,380 |
| Nov 1, 5:30 AM EST | 1,320 | 3.2 | 1,800–5,380 |
| Nov 1, 4:30 AM EST | 1,230 | 3.13 | 1,800–5,380 |
| Nov 1, 3:30 AM EST | 1,220 | 3.12 | 1,800–5,380 |
| Nov 1, 2:30 AM EST | 1,220 | 3.12 | 1,800–5,380 |
| Nov 1, 1:30 AM EST | 1,250 | 3.14 | 1,800–5,380 |
| Nov 1, 1:30 AM EDT | 1,310 | 3.19 | 1,800–5,380 |
| Nov 1, 12:30 AM EDT | 1,380 | 3.25 | 1,800–5,380 |
| Oct 31, 11:30 PM EDT | 1,380 | 3.25 | 1,800–5,230 |
| Oct 31, 10:30 PM EDT | 1,380 | 3.25 | 1,800–5,230 |
| Oct 31, 9:30 PM EDT | 1,380 | 3.25 | 1,800–5,230 |
| Oct 31, 8:30 PM EDT | 1,380 | 3.25 | 1,800–5,230 |
| Oct 31, 7:30 PM EDT | 1,380 | 3.25 | 1,800–5,230 |
| Oct 31, 6:30 PM EDT | 1,380 | 3.25 | 1,800–5,230 |
| Oct 31, 5:30 PM EDT | 1,390 | 3.26 | 1,800–5,230 |
| Oct 31, 4:30 PM EDT | 1,420 | 3.28 | 1,800–5,230 |
| Oct 31, 3:30 PM EDT | 1,430 | 3.29 | 1,800–5,230 |
| Oct 31, 2:30 PM EDT | 1,380 | 3.25 | 1,800–5,230 |
| Oct 31, 1:30 PM EDT | 1,340 | 3.22 | 1,800–5,230 |
| Oct 31, 12:30 PM EDT | 1,430 | 3.29 | 1,800–5,230 |
| Oct 31, 11:30 AM EDT | 1,510 | 3.35 | 1,800–5,230 |
| Oct 31, 10:30 AM EDT | 1,460 | 3.31 | 1,800–5,230 |
| Oct 31, 9:30 AM EDT | 1,390 | 3.26 | 1,800–5,230 |
| Oct 31, 8:30 AM EDT | 1,390 | 3.26 | 1,800–5,230 |
| Oct 31, 7:30 AM EDT | 1,410 | 3.27 | 1,800–5,230 |
| Oct 31, 6:30 AM EDT | 1,450 | 3.3 | 1,800–5,230 |
| Oct 31, 5:30 AM EDT | 1,500 | 3.34 | 1,800–5,230 |
| Oct 31, 4:30 AM EDT | 1,540 | 3.37 | 1,800–5,230 |
| Oct 31, 3:30 AM EDT | 1,540 | 3.37 | 1,800–5,230 |
| Oct 31, 2:30 AM EDT | 1,540 | 3.37 | 1,800–5,230 |
| Oct 31, 1:30 AM EDT | 1,530 | 3.36 | 1,800–5,230 |
| Oct 31, 12:30 AM EDT | 1,530 | 3.36 | 1,800–5,230 |
| Oct 30, 11:30 PM EDT | 1,510 | 3.35 | 1,640–5,910 |
| Oct 30, 10:30 PM EDT | 1,490 | 3.33 | 1,640–5,910 |
| Oct 30, 9:30 PM EDT | 1,490 | 3.33 | 1,640–5,910 |
| Oct 30, 8:30 PM EDT | 1,500 | 3.34 | 1,640–5,910 |
| Oct 30, 7:30 PM EDT | 1,510 | 3.35 | 1,640–5,910 |
| Oct 30, 6:30 PM EDT | 1,600 | 3.41 | 1,640–5,910 |
| Oct 30, 5:30 PM EDT | 1,620 | 3.43 | 1,640–5,910 |
| Oct 30, 4:30 PM EDT | 1,610 | 3.42 | 1,640–5,910 |
| Oct 30, 3:30 PM EDT | 1,530 | 3.36 | 1,640–5,910 |
| Oct 30, 2:30 PM EDT | 1,500 | 3.34 | 1,640–5,910 |
| Oct 30, 1:30 PM EDT | 1,500 | 3.34 | 1,640–5,910 |
| Oct 30, 12:30 PM EDT | 1,500 | 3.34 | 1,640–5,910 |
| Oct 30, 11:30 AM EDT | 1,460 | 3.31 | 1,640–5,910 |
| Oct 30, 10:30 AM EDT | 1,460 | 3.31 | 1,640–5,910 |
| Oct 30, 9:30 AM EDT | 1,460 | 3.31 | 1,640–5,910 |
| Oct 30, 8:30 AM EDT | 1,450 | 3.3 | 1,640–5,910 |
| Oct 30, 7:30 AM EDT | 1,450 | 3.3 | 1,640–5,910 |
| Oct 30, 6:30 AM EDT | 1,430 | 3.29 | 1,640–5,910 |
| Oct 30, 5:30 AM EDT | 1,410 | 3.27 | 1,640–5,910 |
| Oct 30, 4:30 AM EDT | 1,410 | 3.27 | 1,640–5,910 |
| Oct 30, 3:30 AM EDT | 1,420 | 3.28 | 1,640–5,910 |
| Oct 30, 2:30 AM EDT | 1,460 | 3.31 | 1,640–5,910 |
| Oct 30, 1:30 AM EDT | 1,530 | 3.36 | 1,640–5,910 |
| Oct 30, 12:30 AM EDT | 1,540 | 3.37 | 1,640–5,910 |
| Oct 29, 11:30 PM EDT | 1,540 | 3.37 | 1,700–5,990 |
| Oct 29, 10:30 PM EDT | 1,540 | 3.37 | 1,700–5,990 |
| Oct 29, 9:30 PM EDT | 1,530 | 3.36 | 1,700–5,990 |
Normal for Nov 5: 2,240–6,140 ft³/s (middle half of 89 years of record). Now: 1,490 ft³/s, below normal.
Below normal for this date. 1,490 ft³/s is between the 10th and 25th percentiles of daily mean flow for Nov 5 at this gauge over 89 years of record (1938–2026): 10th 1,260, 25th 2,240, median 3,560, 75th 6,140, 90th 9,980 ft³/s.
Daily means on record for Nov 5: lowest 803 ft³/s, highest 27,900 ft³/s.
Classes as USGS labels them (hyswap: flow categories (WDFN_stats schema) (U.S. Geological Survey) ); percentiles from the USGS daily statistics (U.S. Geological Survey) (approved daily means; the reading is provisional and instantaneous).
Steady over 24 hours (−3.9% discharge). Rising or falling means a change of more than 10% in discharge (or 0.2 ft of gauge height) over 24 hours; our rule of thumb, not a USGS class.
Map of USGS gauge 01092000 and the river around it
Where MERRIMACK R NR GOFFS FALLS, BELOW MANCHESTER, NH sits, with 4 other gauges on the same river and our water's map point.
No current water-temperature reading at this gauge, so no temperature guidance is given. Take a stream thermometer. New Hampshire Fish and Game Department publishes no water-temperature line for trout anglers that we found. The lines below are the National Park Service's, federal guidance, not a New Hampshire rule: 68°F.
This gauge is on our page for Merrimack River, but no agency page we read lists its species.
Below NWS action stage. The National Weather Service reports this gauge below its action stage. That is not a statement that wading is safe.
Flood categories: action stage, minor, moderate and major flooding (National Weather Service)Turn Around Don't Drown. “A mere 6 inches of fast-moving flood water can knock over an adult.” No flow number makes a crossing safe; if in doubt, stay out.
Turn Around Don't Drown (National Weather Service)Guidance from the readings above and the published thresholds named with each line; not a fishing forecast, a safety guarantee or a statement about access. Local rules and closures come first.
Below NWS action stage. The National Weather Service reports this gauge below its action stage. That is not a statement that wading is safe.
NWS observed 3.26 ft stage, 1,390 ft³/s at Nov 5, 7:30 PM EST (NWS gauge GOFN3; its stage datum can differ from the USGS gauge height).
NWS river forecast forecast issued Nov 5, 10:32 AM EST. Highest point: 3.1 ft, 1,200 ft³/s on Nov 5, 1:00 PM EST (Below NWS action stage).
| Day | Stage | Flow |
|---|---|---|
| Thu, Nov 5 | 3.1 ft | 1,200 ft³/s |
| Fri, Nov 6 | 3.1 ft | 1,200 ft³/s |
| Sat, Nov 7 | 3.1 ft | 1,200 ft³/s |
| Sun, Nov 8 | 3.1 ft | 1,200 ft³/s |
Open the NWS gauge page · What the categories mean (National Weather Service)
This gauge is on Merrimack River: regulations, guides and shops
USGS gauge page USGS statistics NWS gauge GOFN3
Checked Nov 5, 9:08 PM EST; readings refresh at most every 15 minutes and statistics daily. Provisional USGS data can be revised. Conditions change: re-check before you go. This is general guidance, not a fishing forecast, a safety guarantee or a statement about access.