20231220 14332500 1.0 TRUE Stream Watersheds This data set represents the watershed boundaries of Iowa's rivers and streams. This data set was derived from the Watershed Boundary Dataset, 8, 10 and 12-Digit Hydrologic Units. All relavant units were dissolved into one unit. Full Metadata: ftp://ftp.igsb.uiowa.edu/gis_library/ia_state/watersheds/stream_watersheds/stream_watersheds.html