MONOCACY RIVER AT BRIDGEPORT, MD
USGS 01639000 · Maryland · reports discharge (live), gauge height
Reading MONOCACY RIVER AT BRIDGEPORT, MD…
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USGS 01639000 · 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, 9:30 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, 10:45 PM EDT to Nov 5, 9:30 PM EST; ranging 11.7 to 14 ft³/s; latest 12.2 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, 9:30 PM EST | 12.2 | 2.31 | 14–124 |
| Nov 5, 8:30 PM EST | 12.2 | 2.31 | 14–124 |
| Nov 5, 7:30 PM EST | 12.2 | 2.31 | 14–124 |
| Nov 5, 6:30 PM EST | 12.2 | 2.31 | 14–124 |
| Nov 5, 5:30 PM EST | 12.2 | 2.31 | 14–124 |
| Nov 5, 4:30 PM EST | 12.5 | 2.32 | 14–124 |
| Nov 5, 3:30 PM EST | 12.5 | 2.32 | 14–124 |
| Nov 5, 2:30 PM EST | 12.5 | 2.32 | 14–124 |
| Nov 5, 1:30 PM EST | 12.5 | 2.32 | 14–124 |
| Nov 5, 12:30 PM EST | 12.5 | 2.32 | 14–124 |
| Nov 5, 11:30 AM EST | 12.5 | 2.32 | 14–124 |
| Nov 5, 10:30 AM EST | 12.5 | 2.32 | 14–124 |
| Nov 5, 9:30 AM EST | 12.5 | 2.32 | 14–124 |
| Nov 5, 8:30 AM EST | 12.5 | 2.32 | 14–124 |
| Nov 5, 7:30 AM EST | 12.5 | 2.32 | 14–124 |
| Nov 5, 6:30 AM EST | 12.5 | 2.32 | 14–124 |
| Nov 5, 5:30 AM EST | 12.9 | 2.33 | 14–124 |
| Nov 5, 4:30 AM EST | 12.5 | 2.32 | 14–124 |
| Nov 5, 3:30 AM EST | 12.9 | 2.33 | 14–124 |
| Nov 5, 2:30 AM EST | 12.5 | 2.32 | 14–124 |
| Nov 5, 1:30 AM EST | 12.5 | 2.32 | 14–124 |
| Nov 5, 12:30 AM EST | 12.5 | 2.32 | 14–124 |
| Nov 4, 11:30 PM EST | 12.5 | 2.32 | 15–133 |
| Nov 4, 10:30 PM EST | 12.2 | 2.31 | 15–133 |
| Nov 4, 9:30 PM EST | 12.6 | 2.32 | 15–133 |
| Nov 4, 8:30 PM EST | 12.2 | 2.31 | 15–133 |
| Nov 4, 7:30 PM EST | 12.3 | 2.31 | 15–133 |
| Nov 4, 6:30 PM EST | 12.3 | 2.31 | 15–133 |
| Nov 4, 5:30 PM EST | 12.3 | 2.31 | 15–133 |
| Nov 4, 4:30 PM EST | 12.4 | 2.31 | 15–133 |
| Nov 4, 3:30 PM EST | 12.4 | 2.31 | 15–133 |
| Nov 4, 2:30 PM EST | 12.4 | 2.31 | 15–133 |
| Nov 4, 1:30 PM EST | 12.5 | 2.31 | 15–133 |
| Nov 4, 12:30 PM EST | 12.5 | 2.31 | 15–133 |
| Nov 4, 11:30 AM EST | 12.6 | 2.31 | 15–133 |
| Nov 4, 10:30 AM EST | 12.2 | 2.3 | 15–133 |
| Nov 4, 9:30 AM EST | 12.3 | 2.3 | 15–133 |
| Nov 4, 8:30 AM EST | 12.3 | 2.3 | 15–133 |
| Nov 4, 7:30 AM EST | 12.3 | 2.3 | 15–133 |
| Nov 4, 6:30 AM EST | 12.4 | 2.3 | 15–133 |
| Nov 4, 5:30 AM EST | 12.4 | 2.3 | 15–133 |
| Nov 4, 4:30 AM EST | 12.4 | 2.3 | 15–133 |
| Nov 4, 3:30 AM EST | 12.5 | 2.3 | 15–133 |
| Nov 4, 2:30 AM EST | 12.5 | 2.3 | 15–133 |
| Nov 4, 1:30 AM EST | 12.2 | 2.29 | 15–133 |
| Nov 4, 12:30 AM EST | 12.2 | 2.29 | 15–133 |
| Nov 3, 11:30 PM EST | 11.9 | 2.28 | 17–139 |
| Nov 3, 10:30 PM EST | 11.9 | 2.28 | 17–139 |
| Nov 3, 9:30 PM EST | 12 | 2.28 | 17–139 |
| Nov 3, 8:30 PM EST | 12 | 2.28 | 17–139 |
| Nov 3, 7:30 PM EST | 12 | 2.28 | 17–139 |
| Nov 3, 6:30 PM EST | 12.1 | 2.28 | 17–139 |
| Nov 3, 5:30 PM EST | 12.1 | 2.28 | 17–139 |
| Nov 3, 4:30 PM EST | 12.1 | 2.28 | 17–139 |
| Nov 3, 3:30 PM EST | 12.2 | 2.28 | 17–139 |
| Nov 3, 2:30 PM EST | 12.2 | 2.28 | 17–139 |
| Nov 3, 1:30 PM EST | 12.2 | 2.28 | 17–139 |
| Nov 3, 12:30 PM EST | 12.3 | 2.28 | 17–139 |
| Nov 3, 11:30 AM EST | 12.3 | 2.28 | 17–139 |
| Nov 3, 10:30 AM EST | 12.3 | 2.28 | 17–139 |
| Nov 3, 9:30 AM EST | 12.4 | 2.28 | 17–139 |
| Nov 3, 8:30 AM EST | 12.4 | 2.28 | 17–139 |
| Nov 3, 7:30 AM EST | 12.4 | 2.28 | 17–139 |
| Nov 3, 6:30 AM EST | 12.1 | 2.27 | 17–139 |
| Nov 3, 5:30 AM EST | 12.1 | 2.27 | 17–139 |
| Nov 3, 4:30 AM EST | 12.2 | 2.27 | 17–139 |
| Nov 3, 3:30 AM EST | 12.2 | 2.27 | 17–139 |
| Nov 3, 2:30 AM EST | 12.2 | 2.27 | 17–139 |
| Nov 3, 1:30 AM EST | 12.3 | 2.27 | 17–139 |
| Nov 3, 12:30 AM EST | 12.3 | 2.27 | 17–139 |
| Nov 2, 11:30 PM EST | 12.3 | 2.27 | 13–96 |
| Nov 2, 10:30 PM EST | 12 | 2.26 | 13–96 |
| Nov 2, 9:30 PM EST | 12.1 | 2.26 | 13–96 |
| Nov 2, 8:30 PM EST | 12.1 | 2.26 | 13–96 |
| Nov 2, 7:30 PM EST | 12.1 | 2.26 | 13–96 |
| Nov 2, 6:30 PM EST | 12.2 | 2.26 | 13–96 |
| Nov 2, 5:30 PM EST | 12.2 | 2.26 | 13–96 |
| Nov 2, 4:30 PM EST | 12.2 | 2.26 | 13–96 |
| Nov 2, 3:30 PM EST | 12.3 | 2.26 | 13–96 |
| Nov 2, 2:30 PM EST | 12.3 | 2.26 | 13–96 |
| Nov 2, 1:30 PM EST | 12.3 | 2.26 | 13–96 |
| Nov 2, 12:30 PM EST | 12.4 | 2.26 | 13–96 |
| Nov 2, 11:30 AM EST | 12 | 2.25 | 13–96 |
| Nov 2, 10:30 AM EST | 12.1 | 2.25 | 13–96 |
| Nov 2, 9:30 AM EST | 12.1 | 2.25 | 13–96 |
| Nov 2, 8:30 AM EST | 12.1 | 2.25 | 13–96 |
| Nov 2, 7:30 AM EST | 12.2 | 2.25 | 13–96 |
| Nov 2, 6:30 AM EST | 12.2 | 2.25 | 13–96 |
| Nov 2, 5:30 AM EST | 12.2 | 2.25 | 13–96 |
| Nov 2, 4:30 AM EST | 11.9 | 2.24 | 13–96 |
| Nov 2, 3:30 AM EST | 12 | 2.24 | 13–96 |
| Nov 2, 2:30 AM EST | 12 | 2.24 | 13–96 |
| Nov 2, 1:30 AM EST | 12 | 2.24 | 13–96 |
| Nov 2, 12:30 AM EST | 12.1 | 2.24 | 13–96 |
| Nov 1, 11:30 PM EST | 12.1 | 2.24 | 12–102 |
| Nov 1, 10:30 PM EST | 11.8 | 2.23 | 12–102 |
| Nov 1, 9:30 PM EST | 11.8 | 2.23 | 12–102 |
| Nov 1, 8:30 PM EST | 11.8 | 2.23 | 12–102 |
| Nov 1, 7:30 PM EST | 11.9 | 2.23 | 12–102 |
| Nov 1, 6:30 PM EST | 11.9 | 2.23 | 12–102 |
| Nov 1, 5:30 PM EST | 11.9 | 2.23 | 12–102 |
| Nov 1, 4:30 PM EST | 12 | 2.23 | 12–102 |
| Nov 1, 3:30 PM EST | 12 | 2.23 | 12–102 |
| Nov 1, 2:30 PM EST | 12 | 2.23 | 12–102 |
| Nov 1, 1:30 PM EST | 11.7 | 2.22 | 12–102 |
| Nov 1, 12:30 PM EST | 11.8 | 2.22 | 12–102 |
| Nov 1, 11:30 AM EST | 11.8 | 2.22 | 12–102 |
| Nov 1, 10:30 AM EST | 11.8 | 2.22 | 12–102 |
| Nov 1, 9:30 AM EST | 11.9 | 2.22 | 12–102 |
| Nov 1, 8:30 AM EST | 11.9 | 2.22 | 12–102 |
| Nov 1, 7:30 AM EST | 11.9 | 2.22 | 12–102 |
| Nov 1, 6:30 AM EST | 12 | 2.22 | 12–102 |
| Nov 1, 5:30 AM EST | 12 | 2.22 | 12–102 |
| Nov 1, 4:30 AM EST | 12 | 2.22 | 12–102 |
| Nov 1, 3:30 AM EST | 12.1 | 2.22 | 12–102 |
| Nov 1, 2:30 AM EST | 12.1 | 2.22 | 12–102 |
| Nov 1, 1:30 AM EST | 12.1 | 2.22 | 12–102 |
| Nov 1, 1:30 AM EDT | 12.2 | 2.22 | 12–102 |
| Nov 1, 12:30 AM EDT | 12.2 | 2.22 | 12–102 |
| Oct 31, 11:30 PM EDT | 12.2 | 2.22 | 13–105 |
| Oct 31, 10:30 PM EDT | 12.3 | 2.22 | 13–105 |
| Oct 31, 9:30 PM EDT | 12.3 | 2.22 | 13–105 |
| Oct 31, 8:30 PM EDT | 12.3 | 2.22 | 13–105 |
| Oct 31, 7:30 PM EDT | 12.4 | 2.22 | 13–105 |
| Oct 31, 6:30 PM EDT | 12.4 | 2.22 | 13–105 |
| Oct 31, 5:30 PM EDT | 12.4 | 2.22 | 13–105 |
| Oct 31, 4:30 PM EDT | 12.4 | 2.22 | 13–105 |
| Oct 31, 3:30 PM EDT | 12.4 | 2.22 | 13–105 |
| Oct 31, 2:30 PM EDT | 12.4 | 2.22 | 13–105 |
| Oct 31, 1:30 PM EDT | 12.4 | 2.22 | 13–105 |
| Oct 31, 12:30 PM EDT | 12.4 | 2.22 | 13–105 |
| Oct 31, 11:30 AM EDT | 12.8 | 2.23 | 13–105 |
| Oct 31, 10:30 AM EDT | 12.4 | 2.22 | 13–105 |
| Oct 31, 9:30 AM EDT | 12.8 | 2.23 | 13–105 |
| Oct 31, 8:30 AM EDT | 12.8 | 2.23 | 13–105 |
| Oct 31, 7:30 AM EDT | 12.8 | 2.23 | 13–105 |
| Oct 31, 6:30 AM EDT | 13.2 | 2.24 | 13–105 |
| Oct 31, 5:30 AM EDT | 13.2 | 2.24 | 13–105 |
| Oct 31, 4:30 AM EDT | 13.2 | 2.24 | 13–105 |
| Oct 31, 3:30 AM EDT | 13.2 | 2.24 | 13–105 |
| Oct 31, 2:30 AM EDT | 13.6 | 2.25 | 13–105 |
| Oct 31, 1:30 AM EDT | 13.6 | 2.25 | 13–105 |
| Oct 31, 12:30 AM EDT | 13.6 | 2.25 | 13–105 |
| Oct 30, 11:30 PM EDT | 13.6 | 2.25 | 13–100 |
| Oct 30, 10:30 PM EDT | 13.6 | 2.25 | 13–100 |
| Oct 30, 9:30 PM EDT | 14 | 2.26 | 13–100 |
| Oct 30, 8:30 PM EDT | 14 | 2.26 | 13–100 |
| Oct 30, 7:30 PM EDT | 14 | 2.26 | 13–100 |
| Oct 30, 6:30 PM EDT | 14 | 2.26 | 13–100 |
| Oct 30, 5:30 PM EDT | 14 | 2.26 | 13–100 |
| Oct 30, 4:30 PM EDT | 13.6 | 2.25 | 13–100 |
| Oct 30, 3:30 PM EDT | 13.6 | 2.25 | 13–100 |
| Oct 30, 2:30 PM EDT | 13.6 | 2.25 | 13–100 |
| Oct 30, 1:30 PM EDT | 13.6 | 2.25 | 13–100 |
| Oct 30, 12:30 PM EDT | 13.6 | 2.25 | 13–100 |
| Oct 30, 11:30 AM EDT | 13.6 | 2.25 | 13–100 |
| Oct 30, 10:30 AM EDT | 13.6 | 2.25 | 13–100 |
| Oct 30, 9:30 AM EDT | 13.6 | 2.25 | 13–100 |
| Oct 30, 8:30 AM EDT | 14 | 2.26 | 13–100 |
| Oct 30, 7:30 AM EDT | 14 | 2.26 | 13–100 |
| Oct 30, 6:30 AM EDT | 14 | 2.26 | 13–100 |
| Oct 30, 5:30 AM EDT | 14 | 2.26 | 13–100 |
| Oct 30, 4:30 AM EDT | 14 | 2.26 | 13–100 |
| Oct 30, 3:30 AM EDT | 14 | 2.26 | 13–100 |
| Oct 30, 2:30 AM EDT | 14 | 2.26 | 13–100 |
| Oct 30, 1:30 AM EDT | 14 | 2.26 | 13–100 |
| Oct 30, 12:30 AM EDT | 14 | 2.26 | 13–100 |
| Oct 29, 11:30 PM EDT | 14 | 2.26 | 14–133 |
| Oct 29, 10:45 PM EDT | 14 | 2.26 | 14–133 |
Map of USGS gauge 01639000 and the river around it
Where MONOCACY RIVER AT BRIDGEPORT, MD sits, with 2 other gauges on the same river.
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.
Normal for Nov 5: 14–124 ft³/s (middle half of 84 years of record). Now: 12.2 ft³/s, below normal.
Below normal for this date. 12.2 ft³/s is between the 10th and 25th percentiles of daily mean flow for Nov 5 at this gauge over 84 years of record (1943–2026): 10th 6.8, 25th 14, median 48, 75th 124, 90th 224 ft³/s.
Daily means on record for Nov 5: lowest 4.5 ft³/s, highest 2,170 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 (−3.2% 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 2.32 ft stage, 17 ft³/s at Nov 5, 9:30 PM EST (NWS gauge BDGM2; 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, 10:44 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.