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Survey Va. Drainage Potomac Coll. No. 1 Locality Cub Run trib of Bull Run trib of Occoquan Cr. 19.9 mi. SW of Falls Church on rt. 211 County Fairfax Quadrangle Elevation Water White, turbid Flow 60 Width - 50' Vegetation none to some algae, aquatic on sides Bottom rock, silt Current mod Shore wooded Distance from shore - 25' Temperature: Air 78 Water 74 Time 1:30 Weather cloudy Depth of Capture Depth of Water - 3' + Method of Capture net Date 8/13/49 Collected by RH & GS Gibbs Orig. preserv Pot. cyanide Time 12:30 - 1:30 PM General notes: [[underline]] Heteraena americana [[/underline]] - com. Access. # 292847 NA - 602 Dr. R. H. Gibbs, Jr.