Location Details Location ID:  23A070   Download Location Data Location Basics Location ID 23A070 Location Name CHEHALIS RIVER AT PORTER Location Description LOCATED AT THE BRIDGE ON THE SIDE ROAD OFF US HIGHWAY 12 ON THE RIGHT WHEN ENTERING PORTER FROM THE NORTHWEST Location Setting Stream/River - Channeled, flowing water Address WA Grays Harbor Ecology Facility/Site ID Location ID Aliases (Alias Type) Location Data Summary Associated EIM Studies AMS001 AMS001-2 AMS001B AMS001C AMS001D AMS001E AMS004 AMS005 FMUFLOW&WQ Sample Matrix(s) Water AIR/GAS Sample Sources Fresh/Surface Water Outdoor Air Field Collection Date Range 7/10/1959 - 7/23/2024 Number of Parameters Obtained 39  (View Data) Samples and Measurements 6530 Bioassay Results 0  Discrete Results 11096  (View Data) Time-Series Results 299450  (Chart Data) Summarized Time-Series Results 26441 Water Column Profile Results 0  Summarized Water Column Profile Results 0   Horizontal Coordinates Calculated Latitude Decimal Degrees (NAD83HARN) 46.93918 Calculated Longitude Decimal Degrees (NAD83HARN) -123.31399 Township/Range/Section/Qtr/Qtr-Qtr 17 N 5 W 21 SE SW Horizontal Coordinates Represent Discrete monitoring point Lat/Long Decimal Degree (Input) 46.93918 , -123.31399 Horizontal Datum (Input) NAD83HARN - High Accuracy Reference Network Horizontal Coordinate Accuracy +/- 40 ft (12 m) Horizontal Coordinate Collection Method Computer map - GIS-based Paper Map Scale Elevation Elevation of Elevation Elevation Datum Elevation Accuracy Elevation Collection Method Sediment Elevation/Elevation Reference Other Info NHD Reach Code 17100103000009 NHD Reach Measure 0.90045210565 NHD FDate 02/23/2012 WRIA 23 - Upper Chehalis Ecology Region Southwest Regional Office US Congressional District 6 State Legislative District 19

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