| Darrow Brook | |
| Name Other: | Tributary to West Branch French Creek |
| Map Size: | 300 |
| Pushpin Map: | Pennsylvania#USA |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of Darrow Brook mouth |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | States |
| Subdivision Name2: | Pennsylvania New York |
| Subdivision Type3: | Counties |
| Subdivision Name3: | Erie Chautauqua |
| Length: | 4.25miles[1] |
| Discharge1 Location: | West Branch French Creek |
| Discharge1 Avg: | 12.84cuft/s at mouth with West Branch French Creek[2] |
| Source1: | divide between Darrow Brook and French Creek |
| Source1 Location: | about 4 miles west of French Creek, New York |
| Source1 Coordinates: | 42.0617°N -79.755°W[3] |
| Source1 Elevation: | 1720feet[4] |
| Mouth: | West Branch French Creek |
| Mouth Location: | about 0.25 miles southeast of Ashton Corners, Pennsylvania |
| Mouth Coordinates: | 42.1161°N -79.7772°W |
| Mouth Elevation: | 1352feet |
| Progression: | West Branch French Creek → French Creek → Allegheny River → Ohio River → Mississippi River → Gulf of Mexico |
| River System: | Allegheny River |
| Bridges: | Pekin Hill Road (x2), Wilson Road |
Darrow Brook is a 4.25miles long tributary to West Branch French Creek that rises in Chautauqua County, New York and flows into Erie County, Pennsylvania. It is classed as a 1st order stream on the EPA waters geoviewer site.[1]
Darrow Brook rises in the Town of Mina, New York in western Chautauqua County and flows north and northwest into Erie County, Pennsylvania to meet West Branch French Creek near Ashton Corners.
Darrow Brook drains of Erie Drift Plain (glacial geology). The watershed receives an average of 46.8 in/year of precipitation and has a wetness index of 424.71.[5] The watershed is about 59% forested.