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Enhanced stage and stage variability on the lower Missouri River benchmarked by Lewis and Clark

Ehlmann, Bethany L. and Criss, Robert E. (2006) Enhanced stage and stage variability on the lower Missouri River benchmarked by Lewis and Clark. Geology, 34 (11). pp. 977-980. ISSN 0091-7613. http://resolver.caltech.edu/CaltechAUTHORS:20121015-112739478

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Abstract

Data from the 1803–1806 Lewis and Clark expedition and nineteenth century stage records are used to quantitatively benchmark natural, premanagement hydrology of the lower Missouri River and assess the magnitude and timing of hydrologic change over nearly two centuries. Data show doubling in daily stage variability from the nineteenth century to 2005. Annual maximum stages have, at some sites, become more extreme, and their seasonality is less regular. Observed changes adversely affect riverine habitat and flood levels; their timing, beginning as early as 1900, suggests that channelization is the major driver.


Item Type:Article
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http://dx.doi.org/10.1130/G22754A.1DOIUNSPECIFIED
http://geology.gsapubs.org/content/34/11/977.abstractPublisherUNSPECIFIED
http://geology.geoscienceworld.org/content/34/11/977PublisherUNSPECIFIED
Additional Information:© 2006 Geological Society of America. Manuscript received 23 February 2006. Revised manuscript received 11 June 2006. Manuscript accepted 17 June 2006. We thank J. Boardman, M. New, and R. Rotman for helpful reviews and J. Keirstead for discussion of statistics. D. Cribs (library, University of Missouri, St. Louis) and personnel at the state and regional offices of the U.S. Geological Survey and Army Corps of Engineers were of invaluable help in obtaining historical records. Ehlmann was partially supported by the Rhodes Trust and Keble College.
Funders:
Funding AgencyGrant Number
Rhodes TrustUNSPECIFIED
Keble CollegeUNSPECIFIED
Subject Keywords:basin management, Missouri River, hydrology, channelization, Lewis and Clark
Record Number:CaltechAUTHORS:20121015-112739478
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20121015-112739478
Official Citation: Bethany L. Ehlmann and Robert E. Criss Enhanced stage and stage variability on the lower Missouri River benchmarked by Lewis and Clark Geology, November, 2006, v. 34, p. 977-980, doi:10.1130/G22754A.1
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:34895
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:15 Oct 2012 20:13
Last Modified:23 Aug 2016 10:19

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