Water-Supply Paper Volume 451-459 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 Excerpt: ...July 12. FOX RIVER AT ALGONQUIN, ILL. Location.--In NW. sec. 34, T. 43 N., R. 8 E. third principal meridian, at Chicago Street Bridge in Algonquin, McHenry County, about 100 feet above Public Service Co.'s dam and 500 feet above Crystal Lake outlet. Records Available.--October 1, 1915, to September 30, 1917. Drainage Area.--1,340 square miles (measured on map issued by IT. S. Geological Survey; scale, 1 to 500,000). Gage.--Enamel staff gage attached to concrete abutment of bridge; read by Edward Pedersen. Channel And Control.--Control is a concrete dam about 100 feet below gage; appears to be cracking and may settle. Discharge Measurements.--Made from upstream side of bridge or by wading below dam. Extremes Op Discharge.--Maximum stage recorded during year, 2.8 feet at 7 a. m. and 6 p. m. March 28 (discharge, 2,260 second-feet); minimum stage, 1.10 feet September 7 and 8 (discharge, 279 second-feet). 1916-17: Maximum stage recorded, 5.3 feet at 6 p. m., March 31,1916 (discharge, 7,120 second-feet); minimum stage, 0.98 foot August 7 and 8, 1916 (discharge, 209 second-feet). Diversions.--Water is diverted to operate grist mill at dam, which is run on average of about 4 hours a day, except Sundays, from September to March, inclusive, and one day a week during rest of year. If total used for each day were uniformly distributed it would probably average less than 5 second-feet and never exceed 8 second-feet. Accuracy.--Stage-discharge relation permanent; not affected by ice. Rating curve fairly well defined. Gage read to hundredths twice daily As storage pond is large the small amount of water used by grist mill does not noticeably affect the gage heights. Daily discharge ascertained by applying mean daily gage height to rating table. Records good. Discharge mea...