MARSH RUN AT GRIMES, MD
USGS 01617800 · Maryland · reports discharge (live), gauge height
Reading MARSH RUN AT GRIMES, MD…
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USGS 01617800 · Maryland · 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, 8:15 PM EST · provisional USGS data
Normal for Nov 5 Steady · 24 h Below NWS action stage
Discharge, last 7 days: 169 readings from Oct 29, 9:15 PM EDT to Nov 5, 8:15 PM EST; ranging 4.05 to 6.89 ft³/s; latest 5.64 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, 8:15 PM EST | 5.64 | 1.05 | 3.6–9 |
| Nov 5, 7:15 PM EST | 5.64 | 1.05 | 3.6–9 |
| Nov 5, 6:15 PM EST | 5.64 | 1.05 | 3.6–9 |
| Nov 5, 5:15 PM EST | 5.35 | 1.04 | 3.6–9 |
| Nov 5, 4:15 PM EST | 5.35 | 1.04 | 3.6–9 |
| Nov 5, 3:15 PM EST | 5.35 | 1.04 | 3.6–9 |
| Nov 5, 2:15 PM EST | 5.07 | 1.03 | 3.6–9 |
| Nov 5, 1:15 PM EST | 4.8 | 1.02 | 3.6–9 |
| Nov 5, 12:15 PM EST | 5.64 | 1.05 | 3.6–9 |
| Nov 5, 11:15 AM EST | 5.64 | 1.05 | 3.6–9 |
| Nov 5, 10:15 AM EST | 5.64 | 1.05 | 3.6–9 |
| Nov 5, 9:15 AM EST | 5.64 | 1.05 | 3.6–9 |
| Nov 5, 8:15 AM EST | 5.64 | 1.05 | 3.6–9 |
| Nov 5, 7:15 AM EST | 5.64 | 1.05 | 3.6–9 |
| Nov 5, 6:15 AM EST | 5.64 | 1.05 | 3.6–9 |
| Nov 5, 5:15 AM EST | 5.35 | 1.04 | 3.6–9 |
| Nov 5, 4:15 AM EST | 5.35 | 1.04 | 3.6–9 |
| Nov 5, 3:15 AM EST | 5.35 | 1.04 | 3.6–9 |
| Nov 5, 2:15 AM EST | 5.35 | 1.04 | 3.6–9 |
| Nov 5, 1:15 AM EST | 5.35 | 1.04 | 3.6–9 |
| Nov 5, 12:15 AM EST | 5.35 | 1.04 | 3.6–9 |
| Nov 4, 11:15 PM EST | 5.35 | 1.04 | 3.5–9.6 |
| Nov 4, 10:15 PM EST | 5.35 | 1.04 | 3.5–9.6 |
| Nov 4, 9:15 PM EST | 5.35 | 1.04 | 3.5–9.6 |
| Nov 4, 8:15 PM EST | 5.35 | 1.04 | 3.5–9.6 |
| Nov 4, 7:15 PM EST | 5.35 | 1.04 | 3.5–9.6 |
| Nov 4, 6:15 PM EST | 5.35 | 1.04 | 3.5–9.6 |
| Nov 4, 5:15 PM EST | 5.35 | 1.04 | 3.5–9.6 |
| Nov 4, 4:15 PM EST | 5.35 | 1.04 | 3.5–9.6 |
| Nov 4, 3:15 PM EST | 5.07 | 1.03 | 3.5–9.6 |
| Nov 4, 2:15 PM EST | 5.07 | 1.03 | 3.5–9.6 |
| Nov 4, 1:15 PM EST | 5.07 | 1.03 | 3.5–9.6 |
| Nov 4, 12:15 PM EST | 4.29 | 1 | 3.5–9.6 |
| Nov 4, 11:15 AM EST | 4.54 | 1.01 | 3.5–9.6 |
| Nov 4, 10:15 AM EST | 5.64 | 1.05 | 3.5–9.6 |
| Nov 4, 9:15 AM EST | 5.64 | 1.05 | 3.5–9.6 |
| Nov 4, 8:15 AM EST | 5.64 | 1.05 | 3.5–9.6 |
| Nov 4, 7:15 AM EST | 5.64 | 1.05 | 3.5–9.6 |
| Nov 4, 6:15 AM EST | 5.64 | 1.05 | 3.5–9.6 |
| Nov 4, 5:15 AM EST | 5.64 | 1.05 | 3.5–9.6 |
| Nov 4, 4:15 AM EST | 5.64 | 1.05 | 3.5–9.6 |
| Nov 4, 3:15 AM EST | 5.64 | 1.05 | 3.5–9.6 |
| Nov 4, 2:15 AM EST | 5.64 | 1.05 | 3.5–9.6 |
| Nov 4, 1:15 AM EST | 5.64 | 1.05 | 3.5–9.6 |
| Nov 4, 12:15 AM EST | 5.64 | 1.05 | 3.5–9.6 |
| Nov 3, 11:15 PM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 10:15 PM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 9:15 PM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 8:15 PM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 7:15 PM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 6:15 PM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 5:15 PM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 4:15 PM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 3:15 PM EST | 5.35 | 1.04 | 3.4–8.9 |
| Nov 3, 2:15 PM EST | 5.35 | 1.04 | 3.4–8.9 |
| Nov 3, 1:15 PM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 12:15 PM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 11:15 AM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 10:15 AM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 9:15 AM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 8:15 AM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 7:15 AM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 6:15 AM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 5:15 AM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 4:15 AM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 3:15 AM EST | 5.64 | 1.05 | 3.4–8.9 |
| Nov 3, 2:15 AM EST | 5.35 | 1.04 | 3.4–8.9 |
| Nov 3, 1:15 AM EST | 5.35 | 1.04 | 3.4–8.9 |
| Nov 3, 12:15 AM EST | 5.35 | 1.04 | 3.4–8.9 |
| Nov 2, 11:15 PM EST | 5.35 | 1.04 | 3.7–8.7 |
| Nov 2, 10:15 PM EST | 5.07 | 1.03 | 3.7–8.7 |
| Nov 2, 9:15 PM EST | 5.07 | 1.03 | 3.7–8.7 |
| Nov 2, 8:15 PM EST | 4.8 | 1.02 | 3.7–8.7 |
| Nov 2, 7:15 PM EST | 4.8 | 1.02 | 3.7–8.7 |
| Nov 2, 6:15 PM EST | 4.54 | 1.01 | 3.7–8.7 |
| Nov 2, 5:15 PM EST | 4.54 | 1.01 | 3.7–8.7 |
| Nov 2, 4:15 PM EST | 4.29 | 1 | 3.7–8.7 |
| Nov 2, 3:15 PM EST | 4.29 | 1 | 3.7–8.7 |
| Nov 2, 2:15 PM EST | 4.05 | 0.99 | 3.7–8.7 |
| Nov 2, 1:15 PM EST | 4.05 | 0.99 | 3.7–8.7 |
| Nov 2, 12:15 PM EST | 5.07 | 1.03 | 3.7–8.7 |
| Nov 2, 11:15 AM EST | 5.64 | 1.05 | 3.7–8.7 |
| Nov 2, 10:15 AM EST | 5.64 | 1.05 | 3.7–8.7 |
| Nov 2, 9:15 AM EST | 5.64 | 1.05 | 3.7–8.7 |
| Nov 2, 8:15 AM EST | 5.64 | 1.05 | 3.7–8.7 |
| Nov 2, 7:15 AM EST | 5.64 | 1.05 | 3.7–8.7 |
| Nov 2, 6:15 AM EST | 5.64 | 1.05 | 3.7–8.7 |
| Nov 2, 5:15 AM EST | 5.64 | 1.05 | 3.7–8.7 |
| Nov 2, 4:15 AM EST | 5.64 | 1.05 | 3.7–8.7 |
| Nov 2, 3:15 AM EST | 5.64 | 1.05 | 3.7–8.7 |
| Nov 2, 2:15 AM EST | 5.64 | 1.05 | 3.7–8.7 |
| Nov 2, 1:15 AM EST | 5.64 | 1.05 | 3.7–8.7 |
| Nov 2, 12:15 AM EST | 5.64 | 1.05 | 3.7–8.7 |
| Nov 1, 11:15 PM EST | 5.64 | 1.05 | 3.7–8.9 |
| Nov 1, 10:15 PM EST | 5.64 | 1.05 | 3.7–8.9 |
| Nov 1, 9:15 PM EST | 5.64 | 1.05 | 3.7–8.9 |
| Nov 1, 8:15 PM EST | 5.64 | 1.05 | 3.7–8.9 |
| Nov 1, 7:15 PM EST | 5.35 | 1.04 | 3.7–8.9 |
| Nov 1, 6:15 PM EST | 5.35 | 1.04 | 3.7–8.9 |
| Nov 1, 5:15 PM EST | 5.35 | 1.04 | 3.7–8.9 |
| Nov 1, 4:15 PM EST | 5.35 | 1.04 | 3.7–8.9 |
| Nov 1, 3:15 PM EST | 5.35 | 1.04 | 3.7–8.9 |
| Nov 1, 2:15 PM EST | 5.07 | 1.03 | 3.7–8.9 |
| Nov 1, 1:15 PM EST | 5.07 | 1.03 | 3.7–8.9 |
| Nov 1, 12:15 PM EST | 5.07 | 1.03 | 3.7–8.9 |
| Nov 1, 11:15 AM EST | 6.25 | 1.07 | 3.7–8.9 |
| Nov 1, 10:15 AM EST | 6.25 | 1.07 | 3.7–8.9 |
| Nov 1, 9:15 AM EST | 6.25 | 1.07 | 3.7–8.9 |
| Nov 1, 8:15 AM EST | 6.25 | 1.07 | 3.7–8.9 |
| Nov 1, 7:15 AM EST | 6.25 | 1.07 | 3.7–8.9 |
| Nov 1, 6:15 AM EST | 5.94 | 1.06 | 3.7–8.9 |
| Nov 1, 5:15 AM EST | 5.94 | 1.06 | 3.7–8.9 |
| Nov 1, 4:15 AM EST | 5.94 | 1.06 | 3.7–8.9 |
| Nov 1, 3:15 AM EST | 5.94 | 1.06 | 3.7–8.9 |
| Nov 1, 2:15 AM EST | 6.25 | 1.07 | 3.7–8.9 |
| Nov 1, 1:15 AM EST | 6.25 | 1.07 | 3.7–8.9 |
| Nov 1, 1:15 AM EDT | 6.25 | 1.07 | 3.7–8.9 |
| Nov 1, 12:15 AM EDT | 6.25 | 1.07 | 3.7–8.9 |
| Oct 31, 11:15 PM EDT | 6.25 | 1.07 | 3.4–9.7 |
| Oct 31, 10:15 PM EDT | 6.25 | 1.07 | 3.4–9.7 |
| Oct 31, 9:15 PM EDT | 6.25 | 1.07 | 3.4–9.7 |
| Oct 31, 8:15 PM EDT | 6.25 | 1.07 | 3.4–9.7 |
| Oct 31, 7:15 PM EDT | 6.25 | 1.07 | 3.4–9.7 |
| Oct 31, 6:15 PM EDT | 6.25 | 1.07 | 3.4–9.7 |
| Oct 31, 5:15 PM EDT | 5.94 | 1.06 | 3.4–9.7 |
| Oct 31, 4:15 PM EDT | 5.94 | 1.06 | 3.4–9.7 |
| Oct 31, 3:15 PM EDT | 5.94 | 1.06 | 3.4–9.7 |
| Oct 31, 2:15 PM EDT | 5.94 | 1.06 | 3.4–9.7 |
| Oct 31, 1:15 PM EDT | 5.94 | 1.06 | 3.4–9.7 |
| Oct 31, 12:15 PM EDT | 6.25 | 1.07 | 3.4–9.7 |
| Oct 31, 11:15 AM EDT | 6.25 | 1.07 | 3.4–9.7 |
| Oct 31, 10:15 AM EDT | 6.25 | 1.07 | 3.4–9.7 |
| Oct 31, 9:15 AM EDT | 6.25 | 1.07 | 3.4–9.7 |
| Oct 31, 8:15 AM EDT | 6.25 | 1.07 | 3.4–9.7 |
| Oct 31, 7:15 AM EDT | 6.25 | 1.07 | 3.4–9.7 |
| Oct 31, 6:15 AM EDT | 6.25 | 1.07 | 3.4–9.7 |
| Oct 31, 5:15 AM EDT | 6.25 | 1.07 | 3.4–9.7 |
| Oct 31, 4:15 AM EDT | 6.25 | 1.07 | 3.4–9.7 |
| Oct 31, 3:15 AM EDT | 6.25 | 1.07 | 3.4–9.7 |
| Oct 31, 2:15 AM EDT | 6.25 | 1.07 | 3.4–9.7 |
| Oct 31, 1:15 AM EDT | 6.25 | 1.07 | 3.4–9.7 |
| Oct 31, 12:15 AM EDT | 6.56 | 1.08 | 3.4–9.7 |
| Oct 30, 11:15 PM EDT | 6.56 | 1.08 | 3.4–9.1 |
| Oct 30, 10:15 PM EDT | 6.56 | 1.08 | 3.4–9.1 |
| Oct 30, 9:15 PM EDT | 6.56 | 1.08 | 3.4–9.1 |
| Oct 30, 8:15 PM EDT | 6.56 | 1.08 | 3.4–9.1 |
| Oct 30, 7:15 PM EDT | 6.56 | 1.08 | 3.4–9.1 |
| Oct 30, 6:15 PM EDT | 6.56 | 1.08 | 3.4–9.1 |
| Oct 30, 5:15 PM EDT | 6.56 | 1.08 | 3.4–9.1 |
| Oct 30, 4:15 PM EDT | 6.56 | 1.08 | 3.4–9.1 |
| Oct 30, 3:15 PM EDT | 6.89 | 1.09 | 3.4–9.1 |
| Oct 30, 2:15 PM EDT | 6.89 | 1.09 | 3.4–9.1 |
| Oct 30, 1:15 PM EDT | 6.89 | 1.09 | 3.4–9.1 |
| Oct 30, 12:15 PM EDT | 6.56 | 1.08 | 3.4–9.1 |
| Oct 30, 11:15 AM EDT | 5.94 | 1.06 | 3.4–9.1 |
| Oct 30, 10:15 AM EDT | 5.94 | 1.06 | 3.4–9.1 |
| Oct 30, 9:15 AM EDT | 5.94 | 1.06 | 3.4–9.1 |
| Oct 30, 8:15 AM EDT | 5.94 | 1.06 | 3.4–9.1 |
| Oct 30, 7:15 AM EDT | 5.94 | 1.06 | 3.4–9.1 |
| Oct 30, 6:15 AM EDT | 5.94 | 1.06 | 3.4–9.1 |
| Oct 30, 5:15 AM EDT | 5.94 | 1.06 | 3.4–9.1 |
| Oct 30, 4:15 AM EDT | 5.94 | 1.06 | 3.4–9.1 |
| Oct 30, 3:15 AM EDT | 5.94 | 1.06 | 3.4–9.1 |
| Oct 30, 2:15 AM EDT | 5.94 | 1.06 | 3.4–9.1 |
| Oct 30, 1:15 AM EDT | 5.64 | 1.05 | 3.4–9.1 |
| Oct 30, 12:15 AM EDT | 5.64 | 1.05 | 3.4–9.1 |
| Oct 29, 11:15 PM EDT | 5.64 | 1.05 | 3.4–9.5 |
| Oct 29, 10:15 PM EDT | 5.64 | 1.05 | 3.4–9.5 |
| Oct 29, 9:15 PM EDT | 5.64 | 1.05 | 3.4–9.5 |
Map of USGS gauge 01617800 and the river around it
Where MARSH RUN AT GRIMES, MD sits.
No current water-temperature reading at this gauge, so no temperature guidance is given. Take a stream thermometer: the trout lines Maryland DNR uses are 65°F and 68°F.
Species list not on file for this gauge. Check the Maryland Department of Natural Resources: Maryland trout stocking · Maryland fishing regulations.
Normal for Nov 5: 3.6–9 ft³/s (middle half of 63 years of record). Now: 5.64 ft³/s, normal.
Normal for this date. 5.64 ft³/s is between the 25th and 75th percentiles of daily mean flow for Nov 5 at this gauge over 63 years of record (1964–2026): 10th 1.5, 25th 3.6, median 5, 75th 9, 90th 19 ft³/s.
Daily means on record for Nov 5: lowest 0.78 ft³/s, highest 46.9 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 (+5.4% 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.
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 1.05 ft stage, 5 ft³/s at Nov 5, 8:15 PM EST (NWS gauge GRMM2; its stage datum can differ from the USGS gauge height).
Forecasts are not available. Only observed stages are available for this point.
Open the NWS gauge page · What the categories mean (National Weather Service)
Checked Nov 5, 9:05 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.