TY - RPRT TI - Accuracy and precision of stream reach water surface slopes estimated in the field and from maps AU - D.J. Isaak AU - Wayne A. Hubert AU - K.L. Krueger PY - 1998 DO - 10.1577/1548-8675(1999)019<0141:aaposr>2.0.co;2 UR - https://pubs.usgs.gov/publication/70021880 ID - 70021880 ER -