Small-stream flood investigations in Minnesota: October 1958 to September 1975
An investigation of flood flows from small drainage basins in Minnesota was initiated to aid in the design of bridges, culverts and other highway drainage structures. The program provides peak flow data on streams having drainage areas generally less than 50 square miles, placing particular emphasis on those less than 10 square miles. Basin parameters being investigated are drainage area, length of main stream, slope of main channel, basin altitude, forest cover, and storage area. Each of the 138 gaging stations are equipped with crest-stage gages, and 10 stations have continuous recorded records of stage and precipitation. The relative magnitude of flood flows for different hydrologic regions are shown in graphs which relate maximum discharge to drainage area. Each station record contains location, drainage area, records available, type of gage, on-site structure elevations, bankfill stage, and annual maximum stage and discharge data.