ST. MARYS RIVER NEAR MACCLENNY, FL
USGS 02231000 · Florida · reports discharge (live), gauge height
Reading ST. MARYS RIVER NEAR MACCLENNY, FL…
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USGS 02231000 · Florida · 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, 8:45 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, 10:00 PM EDT to Nov 5, 8:45 PM EST; ranging 134 to 158 ft³/s; latest 140 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, 8:45 PM EST | 140 | 3.31 | 52–242 |
| Nov 5, 7:45 PM EST | 140 | 3.31 | 52–242 |
| Nov 5, 6:45 PM EST | 140 | 3.32 | 52–242 |
| Nov 5, 5:45 PM EST | 140 | 3.32 | 52–242 |
| Nov 5, 4:45 PM EST | 140 | 3.32 | 52–242 |
| Nov 5, 3:45 PM EST | 140 | 3.32 | 52–242 |
| Nov 5, 2:45 PM EST | 141 | 3.33 | 52–242 |
| Nov 5, 1:45 PM EST | 140 | 3.31 | 52–242 |
| Nov 5, 12:45 PM EST | 140 | 3.31 | 52–242 |
| Nov 5, 11:45 AM EST | 140 | 3.31 | 52–242 |
| Nov 5, 10:45 AM EST | 140 | 3.31 | 52–242 |
| Nov 5, 9:45 AM EST | 140 | 3.31 | 52–242 |
| Nov 5, 8:45 AM EST | 140 | 3.31 | 52–242 |
| Nov 5, 7:45 AM EST | 140 | 3.31 | 52–242 |
| Nov 5, 6:45 AM EST | 140 | 3.31 | 52–242 |
| Nov 5, 5:45 AM EST | 140 | 3.31 | 52–242 |
| Nov 5, 4:45 AM EST | 140 | 3.31 | 52–242 |
| Nov 5, 3:45 AM EST | 139 | 3.3 | 52–242 |
| Nov 5, 2:45 AM EST | 139 | 3.3 | 52–242 |
| Nov 5, 1:45 AM EST | 139 | 3.3 | 52–242 |
| Nov 5, 12:45 AM EST | 138 | 3.29 | 52–242 |
| Nov 4, 11:45 PM EST | 138 | 3.29 | 54–256 |
| Nov 4, 10:45 PM EST | 137 | 3.28 | 54–256 |
| Nov 4, 9:45 PM EST | 137 | 3.28 | 54–256 |
| Nov 4, 8:45 PM EST | 136 | 3.27 | 54–256 |
| Nov 4, 7:45 PM EST | 136 | 3.27 | 54–256 |
| Nov 4, 6:45 PM EST | 135 | 3.26 | 54–256 |
| Nov 4, 5:45 PM EST | 135 | 3.26 | 54–256 |
| Nov 4, 4:45 PM EST | 135 | 3.26 | 54–256 |
| Nov 4, 3:45 PM EST | 135 | 3.26 | 54–256 |
| Nov 4, 2:45 PM EST | 135 | 3.26 | 54–256 |
| Nov 4, 1:45 PM EST | 135 | 3.26 | 54–256 |
| Nov 4, 12:45 PM EST | 135 | 3.26 | 54–256 |
| Nov 4, 11:45 AM EST | 135 | 3.26 | 54–256 |
| Nov 4, 10:45 AM EST | 135 | 3.26 | 54–256 |
| Nov 4, 9:45 AM EST | 135 | 3.26 | 54–256 |
| Nov 4, 8:45 AM EST | 135 | 3.26 | 54–256 |
| Nov 4, 7:45 AM EST | 134 | 3.25 | 54–256 |
| Nov 4, 6:45 AM EST | 135 | 3.26 | 54–256 |
| Nov 4, 5:45 AM EST | 134 | 3.25 | 54–256 |
| Nov 4, 4:45 AM EST | 135 | 3.26 | 54–256 |
| Nov 4, 3:45 AM EST | 135 | 3.26 | 54–256 |
| Nov 4, 2:45 AM EST | 135 | 3.26 | 54–256 |
| Nov 4, 1:45 AM EST | 135 | 3.26 | 54–256 |
| Nov 4, 12:45 AM EST | 135 | 3.26 | 54–256 |
| Nov 3, 11:45 PM EST | 135 | 3.26 | 48–247 |
| Nov 3, 10:45 PM EST | 136 | 3.27 | 48–247 |
| Nov 3, 9:45 PM EST | 135 | 3.26 | 48–247 |
| Nov 3, 8:45 PM EST | 136 | 3.27 | 48–247 |
| Nov 3, 7:45 PM EST | 135 | 3.26 | 48–247 |
| Nov 3, 6:45 PM EST | 136 | 3.27 | 48–247 |
| Nov 3, 5:45 PM EST | 135 | 3.26 | 48–247 |
| Nov 3, 4:45 PM EST | 135 | 3.26 | 48–247 |
| Nov 3, 3:45 PM EST | 136 | 3.27 | 48–247 |
| Nov 3, 2:45 PM EST | 135 | 3.26 | 48–247 |
| Nov 3, 1:45 PM EST | 135 | 3.26 | 48–247 |
| Nov 3, 12:45 PM EST | 136 | 3.27 | 48–247 |
| Nov 3, 11:45 AM EST | 136 | 3.27 | 48–247 |
| Nov 3, 10:45 AM EST | 135 | 3.26 | 48–247 |
| Nov 3, 9:45 AM EST | 135 | 3.26 | 48–247 |
| Nov 3, 8:45 AM EST | 135 | 3.26 | 48–247 |
| Nov 3, 7:45 AM EST | 135 | 3.26 | 48–247 |
| Nov 3, 6:45 AM EST | 135 | 3.26 | 48–247 |
| Nov 3, 5:45 AM EST | 135 | 3.26 | 48–247 |
| Nov 3, 4:45 AM EST | 135 | 3.26 | 48–247 |
| Nov 3, 3:45 AM EST | 135 | 3.26 | 48–247 |
| Nov 3, 2:45 AM EST | 135 | 3.26 | 48–247 |
| Nov 3, 1:45 AM EST | 135 | 3.26 | 48–247 |
| Nov 3, 12:45 AM EST | 135 | 3.26 | 48–247 |
| Nov 2, 11:45 PM EST | 136 | 3.27 | 47–253 |
| Nov 2, 10:45 PM EST | 136 | 3.27 | 47–253 |
| Nov 2, 9:45 PM EST | 135 | 3.26 | 47–253 |
| Nov 2, 8:45 PM EST | 135 | 3.26 | 47–253 |
| Nov 2, 7:45 PM EST | 135 | 3.26 | 47–253 |
| Nov 2, 6:45 PM EST | 135 | 3.26 | 47–253 |
| Nov 2, 5:45 PM EST | 135 | 3.26 | 47–253 |
| Nov 2, 4:45 PM EST | 135 | 3.26 | 47–253 |
| Nov 2, 3:45 PM EST | 136 | 3.27 | 47–253 |
| Nov 2, 2:45 PM EST | 135 | 3.26 | 47–253 |
| Nov 2, 1:45 PM EST | 136 | 3.27 | 47–253 |
| Nov 2, 12:45 PM EST | 135 | 3.26 | 47–253 |
| Nov 2, 11:45 AM EST | 135 | 3.26 | 47–253 |
| Nov 2, 10:45 AM EST | 134 | 3.25 | 47–253 |
| Nov 2, 9:45 AM EST | 135 | 3.26 | 47–253 |
| Nov 2, 8:45 AM EST | 135 | 3.26 | 47–253 |
| Nov 2, 7:45 AM EST | 135 | 3.26 | 47–253 |
| Nov 2, 6:45 AM EST | 135 | 3.26 | 47–253 |
| Nov 2, 5:45 AM EST | 135 | 3.26 | 47–253 |
| Nov 2, 4:45 AM EST | 136 | 3.27 | 47–253 |
| Nov 2, 3:45 AM EST | 136 | 3.27 | 47–253 |
| Nov 2, 2:45 AM EST | 136 | 3.27 | 47–253 |
| Nov 2, 1:45 AM EST | 136 | 3.27 | 47–253 |
| Nov 2, 12:45 AM EST | 137 | 3.28 | 47–253 |
| Nov 1, 11:45 PM EST | 137 | 3.28 | 47–241 |
| Nov 1, 10:45 PM EST | 137 | 3.28 | 47–241 |
| Nov 1, 9:45 PM EST | 137 | 3.28 | 47–241 |
| Nov 1, 8:45 PM EST | 137 | 3.28 | 47–241 |
| Nov 1, 7:45 PM EST | 138 | 3.29 | 47–241 |
| Nov 1, 6:45 PM EST | 138 | 3.29 | 47–241 |
| Nov 1, 5:45 PM EST | 138 | 3.29 | 47–241 |
| Nov 1, 4:45 PM EST | 139 | 3.3 | 47–241 |
| Nov 1, 3:45 PM EST | 139 | 3.3 | 47–241 |
| Nov 1, 2:45 PM EST | 139 | 3.3 | 47–241 |
| Nov 1, 1:45 PM EST | 139 | 3.3 | 47–241 |
| Nov 1, 12:45 PM EST | 139 | 3.3 | 47–241 |
| Nov 1, 11:45 AM EST | 140 | 3.31 | 47–241 |
| Nov 1, 10:45 AM EST | 140 | 3.31 | 47–241 |
| Nov 1, 9:45 AM EST | 140 | 3.31 | 47–241 |
| Nov 1, 8:45 AM EST | 140 | 3.31 | 47–241 |
| Nov 1, 7:45 AM EST | 140 | 3.32 | 47–241 |
| Nov 1, 6:45 AM EST | 140 | 3.32 | 47–241 |
| Nov 1, 5:45 AM EST | 140 | 3.32 | 47–241 |
| Nov 1, 4:45 AM EST | 140 | 3.32 | 47–241 |
| Nov 1, 3:45 AM EST | 141 | 3.33 | 47–241 |
| Nov 1, 2:45 AM EST | 141 | 3.33 | 47–241 |
| Nov 1, 1:45 AM EST | 142 | 3.34 | 47–241 |
| Nov 1, 1:45 AM EDT | 142 | 3.34 | 47–241 |
| Nov 1, 12:45 AM EDT | 142 | 3.34 | 47–241 |
| Oct 31, 11:45 PM EDT | 142 | 3.34 | 48–252 |
| Oct 31, 10:45 PM EDT | 143 | 3.35 | 48–252 |
| Oct 31, 9:45 PM EDT | 143 | 3.35 | 48–252 |
| Oct 31, 8:45 PM EDT | 144 | 3.36 | 48–252 |
| Oct 31, 7:45 PM EDT | 144 | 3.36 | 48–252 |
| Oct 31, 6:45 PM EDT | 145 | 3.37 | 48–252 |
| Oct 31, 5:45 PM EDT | 145 | 3.37 | 48–252 |
| Oct 31, 4:45 PM EDT | 146 | 3.38 | 48–252 |
| Oct 31, 3:45 PM EDT | 147 | 3.39 | 48–252 |
| Oct 31, 2:45 PM EDT | 147 | 3.39 | 48–252 |
| Oct 31, 1:45 PM EDT | 146 | 3.38 | 48–252 |
| Oct 31, 12:45 PM EDT | 146 | 3.38 | 48–252 |
| Oct 31, 11:45 AM EDT | 147 | 3.39 | 48–252 |
| Oct 31, 10:45 AM EDT | 147 | 3.39 | 48–252 |
| Oct 31, 9:45 AM EDT | 147 | 3.39 | 48–252 |
| Oct 31, 8:45 AM EDT | 148 | 3.4 | 48–252 |
| Oct 31, 7:45 AM EDT | 148 | 3.4 | 48–252 |
| Oct 31, 6:45 AM EDT | 148 | 3.4 | 48–252 |
| Oct 31, 5:45 AM EDT | 148 | 3.4 | 48–252 |
| Oct 31, 4:45 AM EDT | 149 | 3.41 | 48–252 |
| Oct 31, 3:45 AM EDT | 149 | 3.41 | 48–252 |
| Oct 31, 2:45 AM EDT | 149 | 3.41 | 48–252 |
| Oct 31, 1:45 AM EDT | 149 | 3.41 | 48–252 |
| Oct 31, 12:45 AM EDT | 150 | 3.42 | 48–252 |
| Oct 30, 11:45 PM EDT | 150 | 3.42 | 49–259 |
| Oct 30, 10:45 PM EDT | 150 | 3.42 | 49–259 |
| Oct 30, 9:45 PM EDT | 151 | 3.43 | 49–259 |
| Oct 30, 8:45 PM EDT | 151 | 3.43 | 49–259 |
| Oct 30, 7:45 PM EDT | 152 | 3.44 | 49–259 |
| Oct 30, 6:45 PM EDT | 152 | 3.44 | 49–259 |
| Oct 30, 5:45 PM EDT | 152 | 3.44 | 49–259 |
| Oct 30, 4:45 PM EDT | 153 | 3.45 | 49–259 |
| Oct 30, 3:45 PM EDT | 154 | 3.46 | 49–259 |
| Oct 30, 2:45 PM EDT | 153 | 3.45 | 49–259 |
| Oct 30, 1:45 PM EDT | 154 | 3.46 | 49–259 |
| Oct 30, 12:45 PM EDT | 154 | 3.46 | 49–259 |
| Oct 30, 11:45 AM EDT | 154 | 3.46 | 49–259 |
| Oct 30, 10:45 AM EDT | 154 | 3.46 | 49–259 |
| Oct 30, 9:45 AM EDT | 155 | 3.47 | 49–259 |
| Oct 30, 8:45 AM EDT | 155 | 3.47 | 49–259 |
| Oct 30, 7:45 AM EDT | 156 | 3.48 | 49–259 |
| Oct 30, 6:45 AM EDT | 156 | 3.48 | 49–259 |
| Oct 30, 5:45 AM EDT | 156 | 3.48 | 49–259 |
| Oct 30, 4:45 AM EDT | 156 | 3.49 | 49–259 |
| Oct 30, 3:45 AM EDT | 156 | 3.49 | 49–259 |
| Oct 30, 2:45 AM EDT | 156 | 3.49 | 49–259 |
| Oct 30, 1:45 AM EDT | 157 | 3.5 | 49–259 |
| Oct 30, 12:45 AM EDT | 157 | 3.5 | 49–259 |
| Oct 29, 11:45 PM EDT | 157 | 3.5 | 49–292 |
| Oct 29, 10:45 PM EDT | 158 | 3.51 | 49–292 |
| Oct 29, 10:00 PM EDT | 158 | 3.51 | 49–292 |
Map of USGS gauge 02231000 and the river around it
Where ST. MARYS RIVER NEAR MACCLENNY, FL sits, with 1 other gauge 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. Florida Fish and Wildlife Conservation Commission publishes no water-temperature line for trout anglers that we found. The lines below are the National Park Service's, federal guidance, not a Florida rule: 68°F.
This gauge is on our page for Saint Marys River, but no agency page we read lists its species.
Normal for Nov 5: 52–242 ft³/s (middle half of 100 years of record). Now: 140 ft³/s, normal.
Normal for this date. 140 ft³/s is between the 25th and 75th percentiles of daily mean flow for Nov 5 at this gauge over 100 years of record (1927–2026): 10th 29, 25th 52, median 101, 75th 242, 90th 539 ft³/s.
Daily means on record for Nov 5: lowest 16 ft³/s, highest 4,800 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 (+2.9% 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.
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 3.31 ft stage, 86 ft³/s at Nov 5, 8:45 PM EST (NWS gauge MACF1; 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, 9:49 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.