Geology topics

Lawrence C. Crawford

Publications and source records attributed to Lawrence C. Crawford.

3 recordsLinked to original sources

USGS1944

Surface water resources of Iowa for the period October 1, 1940 to September 30, 1942

The State and Federal cooperative program for the systematic collection of stream-flow records in Iowa was initiated in L914, although a few records were obtained by special arrangements during an earlier period. Since the beginning of the cooperative program measurements of stage or discharge have been obtained at about 100 stations on Iowa streams and lakes for periods of various lengths. The longest records are those for the Mississippi River at Le Claire and Keokuk where authenticated data have been used to extend the record back to 1873 with decreasing accuracy for the earlier years. In addition to the records of daily stages or discharges, hundreds of measurements of a miscellaneous character also have been made at other points.

Iowa↗

USGS1942

Summaries of yearly and flood flow relating to Iowa streams 1873-1940

As a result of the need for basic data and the lack of a current and convenient summary concerning the surface-water resources of Iowa, a synoptic inventory has been prepared as a part of the present State-wide program which is made possible by State and Federal cooperative action. These hydrologic data are assembled in abbreviated form for the convenient* of the public and in order that a current State report containing stream-flow records under one cover will be more readily accessible for Iowa. This inventory is here presented in the form of a brief compilation report which summarizes results of stream-flow measurements relating to Iowa streams through out the years during which local. State and Federal agencies have cooperated in Iowa with the water resources branch of the United States Geological Survey. The principal basic data consist of concise summaries for gaging stations in Iowa and certain relevant locations adjacent thereto for which records for five or more complete years have been collected. These summaries include a comprehensive description and history of each station followed by a table giving in convenient form and for general use the figures of maximum and minimum daily dis charge and yearly mean discharge and runoff for the water and calendar years of record. In addition, approximately 300 miscellaneous discharge measurements, which have been made within the State of Iowa, am included in an original and convenient listing. A summary of maximum discharges at LIS places is also given together with other data pertinent to flood flow in Iowa.

Iowa↗

USGS1940

Maximum discharges at stream-measurement stations through December 31, 1937, with a supplement including additions and changes through September 30, 1938

This report is a compilation of the highest known discharges at most gaging stations in the United States and at several places on boundary streams in Canada and Mexico. In the design and operation of a variety of engineering works on rivers, such as dams, spillways, bridges, dikes, and floodways, it is important to know the flood flows for which provision should be made. This report makes available a summary of the records of flood discharges of the streams of the United States for thousands of drainage areas. Many of the records extend back scores of years, and a few extend back more than 100 years. The data concerning maximum known flood flows in this report form a basis of comparison for floods that may occur in the future. The records in the annual surface water reports of the Geological Society provide the broad network on which this compilation is based.

Water Supply Paper↗