ARES of Delaware County SKYWARN Weather Information & Links Flooding USGS Streamflow Data Current: Chester Creek near Chester, PA Chester Creek near Chester, PA waterdata.usgs.gov/monitoring…Monitoring location 01477000 is associated with a STREAM in DELAWARE COUNTY, PENNSYLVANIA. Current conditions of DISCHARGE and GAGE HEIGHT are available. Water data back to 1931 are available online.Open link ×