MERRIMACK RIVER AT CONCORD, NH
USGS 01088400 · New Hampshire · reports discharge (daily means), gauge height
Reading MERRIMACK RIVER AT CONCORD, NH…
Back to the search
USGS 01088400 · New Hampshire · reports discharge (daily means), 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
Steady · 24 h Below NWS action stage
Daily mean flow for Thu, Nov 5: USGS publishes this gauge's flow once a day, after the day ends, not as live readings.
Gauge height, last 7 days: 169 readings from Oct 29, 9:45 PM EDT to Nov 5, 8:30 PM EST; ranging 3.12 to 3.39 ft; latest 3.23 ft.
USGS provisional data may be revised. Source: USGS instantaneous values.
| Time | Gauge height (ft) |
|---|---|
| Nov 5, 8:30 PM EST | 3.23 |
| Nov 5, 7:30 PM EST | 3.22 |
| Nov 5, 6:30 PM EST | 3.21 |
| Nov 5, 5:30 PM EST | 3.2 |
| Nov 5, 4:30 PM EST | 3.18 |
| Nov 5, 3:30 PM EST | 3.17 |
| Nov 5, 2:30 PM EST | 3.18 |
| Nov 5, 1:30 PM EST | 3.16 |
| Nov 5, 12:30 PM EST | 3.16 |
| Nov 5, 11:30 AM EST | 3.15 |
| Nov 5, 10:30 AM EST | 3.15 |
| Nov 5, 9:30 AM EST | 3.15 |
| Nov 5, 8:30 AM EST | 3.14 |
| Nov 5, 7:30 AM EST | 3.13 |
| Nov 5, 6:30 AM EST | 3.12 |
| Nov 5, 5:30 AM EST | 3.13 |
| Nov 5, 4:30 AM EST | 3.14 |
| Nov 5, 3:30 AM EST | 3.15 |
| Nov 5, 2:30 AM EST | 3.15 |
| Nov 5, 1:30 AM EST | 3.16 |
| Nov 5, 12:30 AM EST | 3.17 |
| Nov 4, 11:30 PM EST | 3.17 |
| Nov 4, 10:30 PM EST | 3.18 |
| Nov 4, 9:30 PM EST | 3.19 |
| Nov 4, 8:30 PM EST | 3.2 |
| Nov 4, 7:30 PM EST | 3.2 |
| Nov 4, 6:30 PM EST | 3.22 |
| Nov 4, 5:30 PM EST | 3.22 |
| Nov 4, 4:30 PM EST | 3.23 |
| Nov 4, 3:30 PM EST | 3.23 |
| Nov 4, 2:30 PM EST | 3.23 |
| Nov 4, 1:30 PM EST | 3.25 |
| Nov 4, 12:30 PM EST | 3.25 |
| Nov 4, 11:30 AM EST | 3.25 |
| Nov 4, 10:30 AM EST | 3.26 |
| Nov 4, 9:30 AM EST | 3.27 |
| Nov 4, 8:30 AM EST | 3.28 |
| Nov 4, 7:30 AM EST | 3.29 |
| Nov 4, 6:30 AM EST | 3.31 |
| Nov 4, 5:30 AM EST | 3.31 |
| Nov 4, 4:30 AM EST | 3.32 |
| Nov 4, 3:30 AM EST | 3.31 |
| Nov 4, 2:30 AM EST | 3.31 |
| Nov 4, 1:30 AM EST | 3.31 |
| Nov 4, 12:30 AM EST | 3.3 |
| Nov 3, 11:30 PM EST | 3.29 |
| Nov 3, 10:30 PM EST | 3.29 |
| Nov 3, 9:30 PM EST | 3.28 |
| Nov 3, 8:30 PM EST | 3.27 |
| Nov 3, 7:30 PM EST | 3.28 |
| Nov 3, 6:30 PM EST | 3.29 |
| Nov 3, 5:30 PM EST | 3.3 |
| Nov 3, 4:30 PM EST | 3.31 |
| Nov 3, 3:30 PM EST | 3.32 |
| Nov 3, 2:30 PM EST | 3.33 |
| Nov 3, 1:30 PM EST | 3.34 |
| Nov 3, 12:30 PM EST | 3.34 |
| Nov 3, 11:30 AM EST | 3.35 |
| Nov 3, 10:30 AM EST | 3.36 |
| Nov 3, 9:30 AM EST | 3.37 |
| Nov 3, 8:30 AM EST | 3.38 |
| Nov 3, 7:30 AM EST | 3.39 |
| Nov 3, 6:30 AM EST | 3.39 |
| Nov 3, 5:30 AM EST | 3.39 |
| Nov 3, 4:30 AM EST | 3.38 |
| Nov 3, 3:30 AM EST | 3.38 |
| Nov 3, 2:30 AM EST | 3.37 |
| Nov 3, 1:30 AM EST | 3.37 |
| Nov 3, 12:30 AM EST | 3.36 |
| Nov 2, 11:30 PM EST | 3.36 |
| Nov 2, 10:30 PM EST | 3.35 |
| Nov 2, 9:30 PM EST | 3.34 |
| Nov 2, 8:30 PM EST | 3.33 |
| Nov 2, 7:30 PM EST | 3.32 |
| Nov 2, 6:30 PM EST | 3.31 |
| Nov 2, 5:30 PM EST | 3.29 |
| Nov 2, 4:30 PM EST | 3.28 |
| Nov 2, 3:30 PM EST | 3.25 |
| Nov 2, 2:30 PM EST | 3.23 |
| Nov 2, 1:30 PM EST | 3.22 |
| Nov 2, 12:30 PM EST | 3.2 |
| Nov 2, 11:30 AM EST | 3.21 |
| Nov 2, 10:30 AM EST | 3.2 |
| Nov 2, 9:30 AM EST | 3.18 |
| Nov 2, 8:30 AM EST | 3.17 |
| Nov 2, 7:30 AM EST | 3.16 |
| Nov 2, 6:30 AM EST | 3.15 |
| Nov 2, 5:30 AM EST | 3.16 |
| Nov 2, 4:30 AM EST | 3.17 |
| Nov 2, 3:30 AM EST | 3.18 |
| Nov 2, 2:30 AM EST | 3.19 |
| Nov 2, 1:30 AM EST | 3.2 |
| Nov 2, 12:30 AM EST | 3.21 |
| Nov 1, 11:30 PM EST | 3.22 |
| Nov 1, 10:30 PM EST | 3.23 |
| Nov 1, 9:30 PM EST | 3.24 |
| Nov 1, 8:30 PM EST | 3.25 |
| Nov 1, 7:30 PM EST | 3.25 |
| Nov 1, 6:30 PM EST | 3.26 |
| Nov 1, 5:30 PM EST | 3.27 |
| Nov 1, 4:30 PM EST | 3.27 |
| Nov 1, 3:30 PM EST | 3.28 |
| Nov 1, 2:30 PM EST | 3.28 |
| Nov 1, 1:30 PM EST | 3.27 |
| Nov 1, 12:30 PM EST | 3.26 |
| Nov 1, 11:30 AM EST | 3.24 |
| Nov 1, 10:30 AM EST | 3.24 |
| Nov 1, 9:30 AM EST | 3.23 |
| Nov 1, 8:30 AM EST | 3.23 |
| Nov 1, 7:30 AM EST | 3.23 |
| Nov 1, 6:30 AM EST | 3.23 |
| Nov 1, 5:30 AM EST | 3.23 |
| Nov 1, 4:30 AM EST | 3.22 |
| Nov 1, 3:30 AM EST | 3.22 |
| Nov 1, 2:30 AM EST | 3.22 |
| Nov 1, 1:30 AM EST | 3.21 |
| Nov 1, 1:30 AM EDT | 3.21 |
| Nov 1, 12:30 AM EDT | 3.2 |
| Oct 31, 11:30 PM EDT | 3.19 |
| Oct 31, 10:30 PM EDT | 3.18 |
| Oct 31, 9:30 PM EDT | 3.18 |
| Oct 31, 8:30 PM EDT | 3.18 |
| Oct 31, 7:30 PM EDT | 3.19 |
| Oct 31, 6:30 PM EDT | 3.19 |
| Oct 31, 5:30 PM EDT | 3.19 |
| Oct 31, 4:30 PM EDT | 3.19 |
| Oct 31, 3:30 PM EDT | 3.18 |
| Oct 31, 2:30 PM EDT | 3.18 |
| Oct 31, 1:30 PM EDT | 3.18 |
| Oct 31, 12:30 PM EDT | 3.16 |
| Oct 31, 11:30 AM EDT | 3.18 |
| Oct 31, 10:30 AM EDT | 3.17 |
| Oct 31, 9:30 AM EDT | 3.16 |
| Oct 31, 8:30 AM EDT | 3.19 |
| Oct 31, 7:30 AM EDT | 3.21 |
| Oct 31, 6:30 AM EDT | 3.21 |
| Oct 31, 5:30 AM EDT | 3.22 |
| Oct 31, 4:30 AM EDT | 3.21 |
| Oct 31, 3:30 AM EDT | 3.22 |
| Oct 31, 2:30 AM EDT | 3.23 |
| Oct 31, 1:30 AM EDT | 3.19 |
| Oct 31, 12:30 AM EDT | 3.22 |
| Oct 30, 11:30 PM EDT | 3.2 |
| Oct 30, 10:30 PM EDT | 3.23 |
| Oct 30, 9:30 PM EDT | 3.24 |
| Oct 30, 8:30 PM EDT | 3.25 |
| Oct 30, 7:30 PM EDT | 3.25 |
| Oct 30, 6:30 PM EDT | 3.26 |
| Oct 30, 5:30 PM EDT | 3.25 |
| Oct 30, 4:30 PM EDT | 3.25 |
| Oct 30, 3:30 PM EDT | 3.23 |
| Oct 30, 2:30 PM EDT | 3.26 |
| Oct 30, 1:30 PM EDT | 3.27 |
| Oct 30, 12:30 PM EDT | 3.27 |
| Oct 30, 11:30 AM EDT | 3.28 |
| Oct 30, 10:30 AM EDT | 3.28 |
| Oct 30, 9:30 AM EDT | 3.29 |
| Oct 30, 8:30 AM EDT | 3.3 |
| Oct 30, 7:30 AM EDT | 3.31 |
| Oct 30, 6:30 AM EDT | 3.32 |
| Oct 30, 5:30 AM EDT | 3.33 |
| Oct 30, 4:30 AM EDT | 3.34 |
| Oct 30, 3:30 AM EDT | 3.34 |
| Oct 30, 2:30 AM EDT | 3.35 |
| Oct 30, 1:30 AM EDT | 3.35 |
| Oct 30, 12:30 AM EDT | 3.36 |
| Oct 29, 11:30 PM EDT | 3.37 |
| Oct 29, 10:30 PM EDT | 3.37 |
| Oct 29, 9:45 PM EDT | 3.37 |
Map of USGS gauge 01088400 and the river around it
Where MERRIMACK RIVER AT CONCORD, NH sits, with 2 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.
USGS publishes no daily statistics for this gauge, so the reading is not compared with the record.
Steady over 24 hours (gauge height +0.03 ft). 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.
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 3.23 ft stage, 2,310 ft³/s at Nov 5, 8:30 PM EST (NWS gauge CONN3; its stage datum can differ from the USGS gauge height).
Forecasts are issued as needed during times of high water, but are not routinely available.
Open the NWS gauge page · What the categories mean (National Weather Service)
Checked Nov 5, 9:36 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.