TY - RPRT TI - Level II scour analysis for Bridge 20 (BRISTH00270020) on Town Highway 27, crossing Little Notch Brook, Bristol, Vermont AU - Erick M. Boehmler PY - 1997 DO - 10.3133/ofr97756 UR - https://pubs.usgs.gov/publication/ofr97756 ID - ofr97756 ER -