Analytical modeling of irrigation and land use effects on streamflow in semi-arid conditions

JOURNAL OF HYDROLOGY

卷:533

Article

Traylor, Jonathan P.^1,2  Zlotnik, Vitaly A.¹ 

[1] Univ Nebraska, Dept Earth & Atmospher Sci, 214 Bessey Hall, Lincoln, NE 68588 USA

[2] US Geol Survey, Nebraska Water Sci Ctr, 5231 South 19th St, Lincoln, NE 68512 USA

关键词: Streamflow;    Stream depletion;    Land use;    Analytical modeling;    Frenchman Creek;    Republican River;   

DOI  :  10.1016/j.jhydrol.2015.12.006

来源: Elsevier

【 摘 要 】

Availability and uncertainty in input data are the primary constraints of groundwater modeling. Analytical models assimilate the key and important data, but capture the major traits of the watershed. We study a baseflow-dominated stream, Frenchman Creek in southwestern Nebraska, USA, which has experienced large streamflow reductions since the 1960s and is a subject of various actions on water rights appropriation. The new element of the model is simultaneous analytical consideration of groundwater pumping and land use change effects. Analytical stream depletion rate calculations by various methods show that pumping from the 462 irrigation wells in the basin consumed a large amount of base flow. The simulated streamflow at the outlet of Frenchman Creek with minimal calibration compares favorably with observed streamflow and indicates the viability of an analytical approach to watersheds with limited hydrogeologic data. Published by Elsevier B.V.

【 授权许可】

Free