Effects of Bedrock Permeability on Hillslope and Riparian Groundwater Dynamics in a Weathered Granite Catchment

TitleEffects of Bedrock Permeability on Hillslope and Riparian Groundwater Dynamics in a Weathered Granite Catchment
Publication TypeJournal Article
Year of Publication2005
AuthorsKatsuyama M., Ohte N., Kabeya N.
JournalWater Resources Research
Volume41
PaginationW01010
Date PublishedJan 20
ISBN Number0043-1397
Accession NumberWOS:000226582100001
Keywordsdischarge, dissolved silica, flow pathways, forested headwater catchment, hydrograph separation, modeling streamwater chemistry, soilwater end-members, steep, stormflow, water chemistry
Abstract

[1] To investigate the effects of bedrock permeability on the linkage between hillslope and riparian groundwater in a weathered granite headwater catchment, the groundwater dynamics were studied using intensive hydrometric and tracer observations. Water flow from the hillslope, through the hillslope/ riparian interface, and into the riparian zone consists of two components: saturated through flow on the soil- bedrock interface during storms and groundwater flow within the permeable bedrock occurring year- round, except during the driest season. Most of the water, which will contribute to the stream, infiltrates the largest part of the catchment and the hillslope area and recharges the deeper groundwater body. Therefore bedrock permeability is an important factor in determining the hillslope- riparian linkage.

Short TitleWater Resour Res
Alternate JournalWater Resour Res