This report contains hydrologic data collected in northern Utah Valley from 1935 to 1982. Northern Utah Valley is approximately the northern half of an alluvial-filled basin partly occupied by Utah Lake in north-central Utah. The report area is bounded by the Wasatch Range on the east, the Lake Mountains on the west, and the Traverse Mountains on the north. Its southern boundary is the boundary between Townships 7 and 8 south, Salt Lake Base Line and Meridian.