Changing climate increases discharge and attenuates its seasonal distribution in the northeastern United States

TitleChanging climate increases discharge and attenuates its seasonal distribution in the northeastern United States
Publication TypeJournal Article
Year of Publication2016
AuthorsBerton, R, Driscoll, CT, Chandler, DG
JournalJournal of Hydrology: Regional Studies
Volume5
Pagination164 - 178
Date Published2016/03//
ISBN Number2214-5818
KeywordsClimate Change, Hydrologic indicator, Land development, Merrimack river, Northeastern United States, Scale dependency
Abstract

Study regionThe Hubbard Brook Experimental Forest is well-established as a Long-Term Ecological Research (LTER) site for climate change and anthropogenic impacts studies on hydrological processes. It is located at the headwater regions of the Merrimack Watershed, the fourth largest basin in New England, USA. The watershed is mostly forested (67%) with some developed regions (16%).
Study focus
We assessed the scale-dependency of streamflow response to climate variation, river regulation, and development for dry, average, and wet years using long-term precipitation and discharge records.
New hydrological insights for the region
The effects of basin scale were limited to discharges with exceedance probability less than 15% and greater than 60% and were expressed as lagged discharge in large sub-basins and earlier discharge in small catchments. Annual discharge responded to increases in annual precipitation but not to river regulation or land development. In general, the temporal trends showed less discharge in dry and greater discharge in wet hydrologic flow classes.

URLhttp://www.sciencedirect.com/science/article/pii/S2214581815002074
Short TitleJournal of Hydrology: Regional Studies