Perkiomen Creek at Graterford, PA
USGS 01473000 · Pennsylvania · reports discharge (live), gauge height, water temperature, specific conductance
Reading Perkiomen Creek at Graterford, PA…
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USGS 01473000 · Pennsylvania · reports discharge (live), gauge height, water temperature, specific conductance
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 83.2 to 114 ft³/s; latest 106 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) | Water temp (°F) | Normal, 25th–75th (ft³/s) |
|---|---|---|---|---|
| Nov 5, 8:15 PM EST | 106 | 1.16 | 59.5 | 99–300 |
| Nov 5, 7:15 PM EST | 109 | 1.17 | 59.4 | 99–300 |
| Nov 5, 6:15 PM EST | 111 | 1.18 | 59.4 | 99–300 |
| Nov 5, 5:15 PM EST | 111 | 1.18 | 59.4 | 99–300 |
| Nov 5, 4:15 PM EST | 114 | 1.19 | 59.5 | 99–300 |
| Nov 5, 3:15 PM EST | 114 | 1.19 | 59.5 | 99–300 |
| Nov 5, 2:15 PM EST | 111 | 1.18 | 58.8 | 99–300 |
| Nov 5, 1:15 PM EST | 111 | 1.18 | 58.3 | 99–300 |
| Nov 5, 12:15 PM EST | 109 | 1.17 | 57.4 | 99–300 |
| Nov 5, 11:15 AM EST | 109 | 1.17 | 56.3 | 99–300 |
| Nov 5, 10:15 AM EST | 106 | 1.16 | 55.9 | 99–300 |
| Nov 5, 9:15 AM EST | 109 | 1.17 | 55.6 | 99–300 |
| Nov 5, 8:15 AM EST | 109 | 1.17 | 55.4 | 99–300 |
| Nov 5, 7:15 AM EST | 109 | 1.17 | 55 | 99–300 |
| Nov 5, 6:15 AM EST | 109 | 1.17 | 55 | 99–300 |
| Nov 5, 5:15 AM EST | 109 | 1.17 | 55 | 99–300 |
| Nov 5, 4:15 AM EST | 111 | 1.18 | 55 | 99–300 |
| Nov 5, 3:15 AM EST | 111 | 1.18 | 55.2 | 99–300 |
| Nov 5, 2:15 AM EST | 111 | 1.18 | 55.2 | 99–300 |
| Nov 5, 1:15 AM EST | 109 | 1.17 | 55.4 | 99–300 |
| Nov 5, 12:15 AM EST | 109 | 1.17 | 55.6 | 99–300 |
| Nov 4, 11:15 PM EST | 109 | 1.17 | 55.8 | 96–296 |
| Nov 4, 10:15 PM EST | 109 | 1.17 | 55.9 | 96–296 |
| Nov 4, 9:15 PM EST | 106 | 1.16 | 56.3 | 96–296 |
| Nov 4, 8:15 PM EST | 109 | 1.17 | 56.3 | 96–296 |
| Nov 4, 7:15 PM EST | 109 | 1.17 | 56.5 | 96–296 |
| Nov 4, 6:15 PM EST | 109 | 1.17 | 56.8 | 96–296 |
| Nov 4, 5:15 PM EST | 109 | 1.17 | 57 | 96–296 |
| Nov 4, 4:15 PM EST | 106 | 1.16 | 57.4 | 96–296 |
| Nov 4, 3:15 PM EST | 106 | 1.16 | 57.9 | 96–296 |
| Nov 4, 2:15 PM EST | 106 | 1.16 | 57.9 | 96–296 |
| Nov 4, 1:15 PM EST | 104 | 1.15 | 57.2 | 96–296 |
| Nov 4, 12:15 PM EST | 104 | 1.15 | 55.2 | 96–296 |
| Nov 4, 11:15 AM EST | 104 | 1.15 | 53.2 | 96–296 |
| Nov 4, 10:15 AM EST | 104 | 1.15 | 51.8 | 96–296 |
| Nov 4, 9:15 AM EST | 104 | 1.15 | 51.3 | 96–296 |
| Nov 4, 8:15 AM EST | 104 | 1.15 | 50.9 | 96–296 |
| Nov 4, 7:15 AM EST | 106 | 1.16 | 50.9 | 96–296 |
| Nov 4, 6:15 AM EST | 106 | 1.16 | 51.1 | 96–296 |
| Nov 4, 5:15 AM EST | 106 | 1.16 | 51.3 | 96–296 |
| Nov 4, 4:15 AM EST | 106 | 1.16 | 51.6 | 96–296 |
| Nov 4, 3:15 AM EST | 106 | 1.16 | 51.8 | 96–296 |
| Nov 4, 2:15 AM EST | 106 | 1.16 | 52.2 | 96–296 |
| Nov 4, 1:15 AM EST | 106 | 1.16 | 52.5 | 96–296 |
| Nov 4, 12:15 AM EST | 106 | 1.16 | 52.9 | 96–296 |
| Nov 3, 11:15 PM EST | 106 | 1.16 | 53.1 | 104–339 |
| Nov 3, 10:15 PM EST | 106 | 1.16 | 53.4 | 104–339 |
| Nov 3, 9:15 PM EST | 109 | 1.17 | 53.4 | 104–339 |
| Nov 3, 8:15 PM EST | 109 | 1.17 | 53.6 | 104–339 |
| Nov 3, 7:15 PM EST | 111 | 1.18 | 53.8 | 104–339 |
| Nov 3, 6:15 PM EST | 111 | 1.18 | 54 | 104–339 |
| Nov 3, 5:15 PM EST | 111 | 1.18 | 54.3 | 104–339 |
| Nov 3, 4:15 PM EST | 111 | 1.18 | 54.7 | 104–339 |
| Nov 3, 3:15 PM EST | 111 | 1.18 | 55.2 | 104–339 |
| Nov 3, 2:15 PM EST | 111 | 1.18 | 55.2 | 104–339 |
| Nov 3, 1:15 PM EST | 111 | 1.18 | 54.3 | 104–339 |
| Nov 3, 12:15 PM EST | 106 | 1.16 | 52.3 | 104–339 |
| Nov 3, 11:15 AM EST | 98.8 | 1.13 | 51.1 | 104–339 |
| Nov 3, 10:15 AM EST | 89.7 | 1.09 | 50.2 | 104–339 |
| Nov 3, 9:15 AM EST | 85.3 | 1.07 | 49.6 | 104–339 |
| Nov 3, 8:15 AM EST | 83.2 | 1.06 | 49.3 | 104–339 |
| Nov 3, 7:15 AM EST | 83.2 | 1.06 | 49.1 | 104–339 |
| Nov 3, 6:15 AM EST | 83.2 | 1.06 | 49.3 | 104–339 |
| Nov 3, 5:15 AM EST | 83.2 | 1.06 | 49.6 | 104–339 |
| Nov 3, 4:15 AM EST | 83.2 | 1.06 | 50 | 104–339 |
| Nov 3, 3:15 AM EST | 83.2 | 1.06 | 50.4 | 104–339 |
| Nov 3, 2:15 AM EST | 83.2 | 1.06 | 50.7 | 104–339 |
| Nov 3, 1:15 AM EST | 83.2 | 1.06 | 51.3 | 104–339 |
| Nov 3, 12:15 AM EST | 85.3 | 1.07 | 51.6 | 104–339 |
| Nov 2, 11:15 PM EST | 85.3 | 1.07 | 52 | 102–301 |
| Nov 2, 10:15 PM EST | 85.3 | 1.07 | 52.2 | 102–301 |
| Nov 2, 9:15 PM EST | 85.3 | 1.07 | 52.3 | 102–301 |
| Nov 2, 8:15 PM EST | 85.3 | 1.07 | 52.5 | 102–301 |
| Nov 2, 7:15 PM EST | 85.3 | 1.07 | 52.7 | 102–301 |
| Nov 2, 6:15 PM EST | 85.3 | 1.07 | 53.1 | 102–301 |
| Nov 2, 5:15 PM EST | 85.3 | 1.07 | 53.4 | 102–301 |
| Nov 2, 4:15 PM EST | 85.3 | 1.07 | 53.8 | 102–301 |
| Nov 2, 3:15 PM EST | 85.3 | 1.07 | 54.5 | 102–301 |
| Nov 2, 2:15 PM EST | 85.3 | 1.07 | 54.5 | 102–301 |
| Nov 2, 1:15 PM EST | 85.3 | 1.07 | 53.6 | 102–301 |
| Nov 2, 12:15 PM EST | 85.3 | 1.07 | 51.8 | 102–301 |
| Nov 2, 11:15 AM EST | 85.3 | 1.07 | 50.2 | 102–301 |
| Nov 2, 10:15 AM EST | 85.3 | 1.07 | 49.1 | 102–301 |
| Nov 2, 9:15 AM EST | 85.3 | 1.07 | 48.7 | 102–301 |
| Nov 2, 8:15 AM EST | 85.3 | 1.07 | 48.4 | 102–301 |
| Nov 2, 7:15 AM EST | 83.2 | 1.06 | 48.4 | 102–301 |
| Nov 2, 6:15 AM EST | 85.3 | 1.07 | 48.6 | 102–301 |
| Nov 2, 5:15 AM EST | 85.3 | 1.07 | 48.9 | 102–301 |
| Nov 2, 4:15 AM EST | 85.3 | 1.07 | 49.3 | 102–301 |
| Nov 2, 3:15 AM EST | 85.3 | 1.07 | 49.6 | 102–301 |
| Nov 2, 2:15 AM EST | 85.3 | 1.07 | 50.2 | 102–301 |
| Nov 2, 1:15 AM EST | 85.3 | 1.07 | 50.5 | 102–301 |
| Nov 2, 12:15 AM EST | 83.2 | 1.06 | 51.1 | 102–301 |
| Nov 1, 11:15 PM EST | 83.2 | 1.06 | 51.4 | 99–246 |
| Nov 1, 10:15 PM EST | 83.2 | 1.06 | 51.6 | 99–246 |
| Nov 1, 9:15 PM EST | 83.2 | 1.06 | 51.8 | 99–246 |
| Nov 1, 8:15 PM EST | 83.2 | 1.06 | 52 | 99–246 |
| Nov 1, 7:15 PM EST | 83.2 | 1.06 | 52.3 | 99–246 |
| Nov 1, 6:15 PM EST | 83.2 | 1.06 | 52.7 | 99–246 |
| Nov 1, 5:15 PM EST | 83.2 | 1.06 | 53.2 | 99–246 |
| Nov 1, 4:15 PM EST | 85.3 | 1.07 | 53.8 | 99–246 |
| Nov 1, 3:15 PM EST | 83.2 | 1.06 | 54.1 | 99–246 |
| Nov 1, 2:15 PM EST | 83.2 | 1.06 | 54.3 | 99–246 |
| Nov 1, 1:15 PM EST | 85.3 | 1.07 | 53.4 | 99–246 |
| Nov 1, 12:15 PM EST | 83.2 | 1.06 | 51.8 | 99–246 |
| Nov 1, 11:15 AM EST | 83.2 | 1.06 | 50.4 | 99–246 |
| Nov 1, 10:15 AM EST | 83.2 | 1.06 | 49.3 | 99–246 |
| Nov 1, 9:15 AM EST | 83.2 | 1.06 | 48.7 | 99–246 |
| Nov 1, 8:15 AM EST | 83.2 | 1.06 | 48.6 | 99–246 |
| Nov 1, 7:15 AM EST | 83.2 | 1.06 | 48.7 | 99–246 |
| Nov 1, 6:15 AM EST | 83.2 | 1.06 | 49.1 | 99–246 |
| Nov 1, 5:15 AM EST | 83.2 | 1.06 | 49.5 | 99–246 |
| Nov 1, 4:15 AM EST | 83.2 | 1.06 | 50.2 | 99–246 |
| Nov 1, 3:15 AM EST | 85.3 | 1.07 | 50.5 | 99–246 |
| Nov 1, 2:15 AM EST | 85.3 | 1.07 | 51.1 | 99–246 |
| Nov 1, 1:15 AM EST | 85.3 | 1.07 | 51.6 | 99–246 |
| Nov 1, 1:15 AM EDT | 87.5 | 1.08 | 52.2 | 99–246 |
| Nov 1, 12:15 AM EDT | 87.5 | 1.08 | 52.5 | 99–246 |
| Oct 31, 11:15 PM EDT | 87.5 | 1.08 | 52.9 | 98–262 |
| Oct 31, 10:15 PM EDT | 87.5 | 1.08 | 53.2 | 98–262 |
| Oct 31, 9:15 PM EDT | 87.5 | 1.08 | 53.6 | 98–262 |
| Oct 31, 8:15 PM EDT | 87.5 | 1.08 | 54 | 98–262 |
| Oct 31, 7:15 PM EDT | 89.7 | 1.09 | 54.3 | 98–262 |
| Oct 31, 6:15 PM EDT | 89.7 | 1.09 | 54.9 | 98–262 |
| Oct 31, 5:15 PM EDT | 89.7 | 1.09 | 55.4 | 98–262 |
| Oct 31, 4:15 PM EDT | 89.7 | 1.09 | 56.1 | 98–262 |
| Oct 31, 3:15 PM EDT | 87.5 | 1.08 | 56.5 | 98–262 |
| Oct 31, 2:15 PM EDT | 87.5 | 1.08 | 55.6 | 98–262 |
| Oct 31, 1:15 PM EDT | 85.3 | 1.07 | 54 | 98–262 |
| Oct 31, 12:15 PM EDT | 85.3 | 1.07 | 52.3 | 98–262 |
| Oct 31, 11:15 AM EDT | 83.2 | 1.06 | 51.3 | 98–262 |
| Oct 31, 10:15 AM EDT | 83.2 | 1.06 | 50.7 | 98–262 |
| Oct 31, 9:15 AM EDT | 83.2 | 1.06 | 50.5 | 98–262 |
| Oct 31, 8:15 AM EDT | 83.2 | 1.06 | 50.7 | 98–262 |
| Oct 31, 7:15 AM EDT | 83.2 | 1.06 | 51.3 | 98–262 |
| Oct 31, 6:15 AM EDT | 83.2 | 1.06 | 51.8 | 98–262 |
| Oct 31, 5:15 AM EDT | 83.2 | 1.06 | 52.2 | 98–262 |
| Oct 31, 4:15 AM EDT | 83.2 | 1.06 | 52.7 | 98–262 |
| Oct 31, 3:15 AM EDT | 83.2 | 1.06 | 53.4 | 98–262 |
| Oct 31, 2:15 AM EDT | 83.2 | 1.06 | 54 | 98–262 |
| Oct 31, 1:15 AM EDT | 85.3 | 1.07 | 54.5 | 98–262 |
| Oct 31, 12:15 AM EDT | 85.3 | 1.07 | 55 | 98–262 |
| Oct 30, 11:15 PM EDT | 85.3 | 1.07 | 55.6 | 98–296 |
| Oct 30, 10:15 PM EDT | 85.3 | 1.07 | 56.1 | 98–296 |
| Oct 30, 9:15 PM EDT | 85.3 | 1.07 | 56.5 | 98–296 |
| Oct 30, 8:15 PM EDT | 83.2 | 1.06 | 56.7 | 98–296 |
| Oct 30, 7:15 PM EDT | 83.2 | 1.06 | 57 | 98–296 |
| Oct 30, 6:15 PM EDT | 85.3 | 1.07 | 57.6 | 98–296 |
| Oct 30, 5:15 PM EDT | 85.3 | 1.07 | 58.3 | 98–296 |
| Oct 30, 4:15 PM EDT | 87.5 | 1.08 | 59 | 98–296 |
| Oct 30, 3:15 PM EDT | 87.5 | 1.08 | 59.4 | 98–296 |
| Oct 30, 2:15 PM EDT | 87.5 | 1.08 | 58.5 | 98–296 |
| Oct 30, 1:15 PM EDT | 87.5 | 1.08 | 56.3 | 98–296 |
| Oct 30, 12:15 PM EDT | 89.7 | 1.09 | 54.7 | 98–296 |
| Oct 30, 11:15 AM EDT | 89.7 | 1.09 | 53.2 | 98–296 |
| Oct 30, 10:15 AM EDT | 89.7 | 1.09 | 52.7 | 98–296 |
| Oct 30, 9:15 AM EDT | 87.5 | 1.08 | 52.3 | 98–296 |
| Oct 30, 8:15 AM EDT | 87.5 | 1.08 | 52.5 | 98–296 |
| Oct 30, 7:15 AM EDT | 87.5 | 1.08 | 52.7 | 98–296 |
| Oct 30, 6:15 AM EDT | 87.5 | 1.08 | 53.1 | 98–296 |
| Oct 30, 5:15 AM EDT | 87.5 | 1.08 | 53.2 | 98–296 |
| Oct 30, 4:15 AM EDT | 87.5 | 1.08 | 53.6 | 98–296 |
| Oct 30, 3:15 AM EDT | 87.5 | 1.08 | 54 | 98–296 |
| Oct 30, 2:15 AM EDT | 87.5 | 1.08 | 54.3 | 98–296 |
| Oct 30, 1:15 AM EDT | 87.5 | 1.08 | 54.7 | 98–296 |
| Oct 30, 12:15 AM EDT | 87.5 | 1.08 | 54.9 | 98–296 |
| Oct 29, 11:15 PM EDT | 87.5 | 1.08 | 55 | 93–277 |
| Oct 29, 10:15 PM EDT | 89.7 | 1.09 | 55.2 | 93–277 |
| Oct 29, 9:15 PM EDT | 89.7 | 1.09 | 55.2 | 93–277 |
Water temperature, last 7 days: 169 readings from Oct 29, 9:15 PM EDT to Nov 5, 8:15 PM EST; ranging 48.4 to 59.5 °F; latest 59.5 °F.
USGS provisional data may be revised. Source: USGS instantaneous values.
| Time | Water temperature (°F) |
|---|---|
| Nov 5, 8:15 PM EST | 59.5 |
| Nov 5, 7:15 PM EST | 59.4 |
| Nov 5, 6:15 PM EST | 59.4 |
| Nov 5, 5:15 PM EST | 59.4 |
| Nov 5, 4:15 PM EST | 59.5 |
| Nov 5, 3:15 PM EST | 59.5 |
| Nov 5, 2:15 PM EST | 58.8 |
| Nov 5, 1:15 PM EST | 58.3 |
| Nov 5, 12:15 PM EST | 57.4 |
| Nov 5, 11:15 AM EST | 56.3 |
| Nov 5, 10:15 AM EST | 55.9 |
| Nov 5, 9:15 AM EST | 55.6 |
| Nov 5, 8:15 AM EST | 55.4 |
| Nov 5, 7:15 AM EST | 55 |
| Nov 5, 6:15 AM EST | 55 |
| Nov 5, 5:15 AM EST | 55 |
| Nov 5, 4:15 AM EST | 55 |
| Nov 5, 3:15 AM EST | 55.2 |
| Nov 5, 2:15 AM EST | 55.2 |
| Nov 5, 1:15 AM EST | 55.4 |
| Nov 5, 12:15 AM EST | 55.6 |
| Nov 4, 11:15 PM EST | 55.8 |
| Nov 4, 10:15 PM EST | 55.9 |
| Nov 4, 9:15 PM EST | 56.3 |
| Nov 4, 8:15 PM EST | 56.3 |
| Nov 4, 7:15 PM EST | 56.5 |
| Nov 4, 6:15 PM EST | 56.8 |
| Nov 4, 5:15 PM EST | 57 |
| Nov 4, 4:15 PM EST | 57.4 |
| Nov 4, 3:15 PM EST | 57.9 |
| Nov 4, 2:15 PM EST | 57.9 |
| Nov 4, 1:15 PM EST | 57.2 |
| Nov 4, 12:15 PM EST | 55.2 |
| Nov 4, 11:15 AM EST | 53.2 |
| Nov 4, 10:15 AM EST | 51.8 |
| Nov 4, 9:15 AM EST | 51.3 |
| Nov 4, 8:15 AM EST | 50.9 |
| Nov 4, 7:15 AM EST | 50.9 |
| Nov 4, 6:15 AM EST | 51.1 |
| Nov 4, 5:15 AM EST | 51.3 |
| Nov 4, 4:15 AM EST | 51.6 |
| Nov 4, 3:15 AM EST | 51.8 |
| Nov 4, 2:15 AM EST | 52.2 |
| Nov 4, 1:15 AM EST | 52.5 |
| Nov 4, 12:15 AM EST | 52.9 |
| Nov 3, 11:15 PM EST | 53.1 |
| Nov 3, 10:15 PM EST | 53.4 |
| Nov 3, 9:15 PM EST | 53.4 |
| Nov 3, 8:15 PM EST | 53.6 |
| Nov 3, 7:15 PM EST | 53.8 |
| Nov 3, 6:15 PM EST | 54 |
| Nov 3, 5:15 PM EST | 54.3 |
| Nov 3, 4:15 PM EST | 54.7 |
| Nov 3, 3:15 PM EST | 55.2 |
| Nov 3, 2:15 PM EST | 55.2 |
| Nov 3, 1:15 PM EST | 54.3 |
| Nov 3, 12:15 PM EST | 52.3 |
| Nov 3, 11:15 AM EST | 51.1 |
| Nov 3, 10:15 AM EST | 50.2 |
| Nov 3, 9:15 AM EST | 49.6 |
| Nov 3, 8:15 AM EST | 49.3 |
| Nov 3, 7:15 AM EST | 49.1 |
| Nov 3, 6:15 AM EST | 49.3 |
| Nov 3, 5:15 AM EST | 49.6 |
| Nov 3, 4:15 AM EST | 50 |
| Nov 3, 3:15 AM EST | 50.4 |
| Nov 3, 2:15 AM EST | 50.7 |
| Nov 3, 1:15 AM EST | 51.3 |
| Nov 3, 12:15 AM EST | 51.6 |
| Nov 2, 11:15 PM EST | 52 |
| Nov 2, 10:15 PM EST | 52.2 |
| Nov 2, 9:15 PM EST | 52.3 |
| Nov 2, 8:15 PM EST | 52.5 |
| Nov 2, 7:15 PM EST | 52.7 |
| Nov 2, 6:15 PM EST | 53.1 |
| Nov 2, 5:15 PM EST | 53.4 |
| Nov 2, 4:15 PM EST | 53.8 |
| Nov 2, 3:15 PM EST | 54.5 |
| Nov 2, 2:15 PM EST | 54.5 |
| Nov 2, 1:15 PM EST | 53.6 |
| Nov 2, 12:15 PM EST | 51.8 |
| Nov 2, 11:15 AM EST | 50.2 |
| Nov 2, 10:15 AM EST | 49.1 |
| Nov 2, 9:15 AM EST | 48.7 |
| Nov 2, 8:15 AM EST | 48.4 |
| Nov 2, 7:15 AM EST | 48.4 |
| Nov 2, 6:15 AM EST | 48.6 |
| Nov 2, 5:15 AM EST | 48.9 |
| Nov 2, 4:15 AM EST | 49.3 |
| Nov 2, 3:15 AM EST | 49.6 |
| Nov 2, 2:15 AM EST | 50.2 |
| Nov 2, 1:15 AM EST | 50.5 |
| Nov 2, 12:15 AM EST | 51.1 |
| Nov 1, 11:15 PM EST | 51.4 |
| Nov 1, 10:15 PM EST | 51.6 |
| Nov 1, 9:15 PM EST | 51.8 |
| Nov 1, 8:15 PM EST | 52 |
| Nov 1, 7:15 PM EST | 52.3 |
| Nov 1, 6:15 PM EST | 52.7 |
| Nov 1, 5:15 PM EST | 53.2 |
| Nov 1, 4:15 PM EST | 53.8 |
| Nov 1, 3:15 PM EST | 54.1 |
| Nov 1, 2:15 PM EST | 54.3 |
| Nov 1, 1:15 PM EST | 53.4 |
| Nov 1, 12:15 PM EST | 51.8 |
| Nov 1, 11:15 AM EST | 50.4 |
| Nov 1, 10:15 AM EST | 49.3 |
| Nov 1, 9:15 AM EST | 48.7 |
| Nov 1, 8:15 AM EST | 48.6 |
| Nov 1, 7:15 AM EST | 48.7 |
| Nov 1, 6:15 AM EST | 49.1 |
| Nov 1, 5:15 AM EST | 49.5 |
| Nov 1, 4:15 AM EST | 50.2 |
| Nov 1, 3:15 AM EST | 50.5 |
| Nov 1, 2:15 AM EST | 51.1 |
| Nov 1, 1:15 AM EST | 51.6 |
| Nov 1, 1:15 AM EDT | 52.2 |
| Nov 1, 12:15 AM EDT | 52.5 |
| Oct 31, 11:15 PM EDT | 52.9 |
| Oct 31, 10:15 PM EDT | 53.2 |
| Oct 31, 9:15 PM EDT | 53.6 |
| Oct 31, 8:15 PM EDT | 54 |
| Oct 31, 7:15 PM EDT | 54.3 |
| Oct 31, 6:15 PM EDT | 54.9 |
| Oct 31, 5:15 PM EDT | 55.4 |
| Oct 31, 4:15 PM EDT | 56.1 |
| Oct 31, 3:15 PM EDT | 56.5 |
| Oct 31, 2:15 PM EDT | 55.6 |
| Oct 31, 1:15 PM EDT | 54 |
| Oct 31, 12:15 PM EDT | 52.3 |
| Oct 31, 11:15 AM EDT | 51.3 |
| Oct 31, 10:15 AM EDT | 50.7 |
| Oct 31, 9:15 AM EDT | 50.5 |
| Oct 31, 8:15 AM EDT | 50.7 |
| Oct 31, 7:15 AM EDT | 51.3 |
| Oct 31, 6:15 AM EDT | 51.8 |
| Oct 31, 5:15 AM EDT | 52.2 |
| Oct 31, 4:15 AM EDT | 52.7 |
| Oct 31, 3:15 AM EDT | 53.4 |
| Oct 31, 2:15 AM EDT | 54 |
| Oct 31, 1:15 AM EDT | 54.5 |
| Oct 31, 12:15 AM EDT | 55 |
| Oct 30, 11:15 PM EDT | 55.6 |
| Oct 30, 10:15 PM EDT | 56.1 |
| Oct 30, 9:15 PM EDT | 56.5 |
| Oct 30, 8:15 PM EDT | 56.7 |
| Oct 30, 7:15 PM EDT | 57 |
| Oct 30, 6:15 PM EDT | 57.6 |
| Oct 30, 5:15 PM EDT | 58.3 |
| Oct 30, 4:15 PM EDT | 59 |
| Oct 30, 3:15 PM EDT | 59.4 |
| Oct 30, 2:15 PM EDT | 58.5 |
| Oct 30, 1:15 PM EDT | 56.3 |
| Oct 30, 12:15 PM EDT | 54.7 |
| Oct 30, 11:15 AM EDT | 53.2 |
| Oct 30, 10:15 AM EDT | 52.7 |
| Oct 30, 9:15 AM EDT | 52.3 |
| Oct 30, 8:15 AM EDT | 52.5 |
| Oct 30, 7:15 AM EDT | 52.7 |
| Oct 30, 6:15 AM EDT | 53.1 |
| Oct 30, 5:15 AM EDT | 53.2 |
| Oct 30, 4:15 AM EDT | 53.6 |
| Oct 30, 3:15 AM EDT | 54 |
| Oct 30, 2:15 AM EDT | 54.3 |
| Oct 30, 1:15 AM EDT | 54.7 |
| Oct 30, 12:15 AM EDT | 54.9 |
| Oct 29, 11:15 PM EDT | 55 |
| Oct 29, 10:15 PM EDT | 55.2 |
| Oct 29, 9:15 PM EDT | 55.2 |
Map of USGS gauge 01473000 and the river around it
Where Perkiomen Creek at Graterford, PA sits, with 1 other gauge on the same river and our water's map point.
In or under PFBC's preferred range. Water 59.5°F now; the highest in the last 24 hours was 59.5°F. The Pennsylvania Fish and Boat Commission: “The preferred temperature range for trout is between 50 and 60 degrees Fahrenheit.”
PFBC position statement on closing coldwater tributary mouths to angling in summer (2006)Normal for Nov 5: 99–300 ft³/s (middle half of 70 years of record). Now: 106 ft³/s, normal.
Normal for this date. 106 ft³/s is between the 25th and 75th percentiles of daily mean flow for Nov 5 at this gauge over 70 years of record (1957–2026): 10th 73, 25th 99, median 139, 75th 300, 90th 489 ft³/s.
Daily means on record for Nov 5: lowest 43 ft³/s, highest 1,420 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 (−2.8% 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.
Species the agency lists for Perkiomen Creek: Brown Trout.
Source: Class A Wild Trout Waters (Pennsylvania Fish and Boat Commission).
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)Cold water. Water 59.5°F. NWS: “Cold shock can be just as severe and dangerous from water temperatures of 50-60°F (10-15°C) as it is from water at 35°F (2°C).” “Always wear a life jacket in and around the water.”
Cold Water Hazards and Safety (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)Specific conductance 480 µS/cm at Nov 5, 8:15 PM EST; 7-day range 464–537 µS/cm
Dissolved ions: Specific conductance rises with the ions dissolved in the water. No fishing threshold is published for it; compare with this gauge's own recent readings.
Conductivity (Electrical Conductance) and Water (U.S. Geological Survey)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 1.17 ft stage, 108 ft³/s at Nov 5, 7:15 PM EST (NWS gauge GRAP1; its stage datum can differ from the USGS gauge height).
NWS river forecast forecast issued Nov 5, 10:17 AM EST. Highest point: 1.8 ft, 336 ft³/s on Nov 6, 7:00 AM EST (Below NWS action stage).
| Day | Stage | Flow |
|---|---|---|
| Thu, Nov 5 | 1.3 ft | 145 ft³/s |
| Fri, Nov 6 | 1.8 ft | 336 ft³/s |
| Sat, Nov 7 | 1.1 ft | 92 ft³/s |
| Sun, Nov 8 | 1 ft | 71 ft³/s |
Open the NWS gauge page · What the categories mean (National Weather Service)
Checked Nov 5, 8:45 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.