TY - RPRT TI - Level II scour analysis for Bridge 21 (MIDBTH00230021) on Town Highway 23, crossing the Middlebury River, Middlebury, Vermont AU - Erick M. Boehmler AU - James R. Degnan PY - 1997 DO - 10.3133/ofr97754 UR - https://pubs.usgs.gov/publication/ofr97754 ID - ofr97754 ER -