Hi, I'm an error. x

San Lorenzo River Project


Authors:
Owners:
Resource type: Composite Resource
Storage: The size of this resource is 12.5 KB
Created: Jul 16, 2019 at 4:11 p.m.
Last updated: Jul 03, 2020 at 3:19 p.m.
Citation: See how to cite this resource
Sharing Status: Public
Views: 185
Downloads: 1
+1 Votes: Be the first one to  +1 this.  (You need to be logged in to rate this.)
Comments: No comments (yet)

Abstract

The contributions and composition of baseflow sources across an extended recession period were quantified for six subwatersheds of varying size in a structurally complex watershed in coastal California using endmember mixing analysis and related to catchment characteristics (e.g., topography, geology, land use, and soil characteristics). Both shallow subsurface and deep groundwater reservoirs were important contributors for streamflow during low flow periods, and the composition of baseflow sources across subwatersheds was directly related to geologic indices. A binary classification of underlying bedrock permeability (e.g., low vs. high) best explained the changes in shallow subsurface water and deeper groundwater inputs through the seasonal recession. Dissolved inorganic carbon (DIC), dissolved organic carbon (DOC), and specific UV absorbance at 254 nm (SUVA254) were used to provide additional insight into endmember characteristics and their contributions to baseflow. Stream water DIC concentrations were broadly controlled by mixing of groundwater and shallow subsurface water endmembers with relatively constant DIC concentrations, while stream water DOC concentrations reflected both spatial and temporal changes in shallow subsurface water DOC. Results from this study show (1) the importance of considering baseflow as a dynamic mixture of water from multiple sources, (2) the effect of geology on source composition at the subwatershed scale during low flow conditions, and (3) the impact of shifting baseflow sources on stream water dissolved carbon concentrations and the utility of using dissolved carbon concentrations to obtain additional insight into temporal variability in baseflow sources.

Subject Keywords

  • No subject keywords have been added.
  • ${ k }

Duplicate. Keyword not added.

Error: ${ error }
Deleting all keywords will set the resource sharing status to private.

Content

References

Related Resources

The content of this resource serves as the data for: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2019WR026577

How to Cite

Richardson, C. (2020). San Lorenzo River Project, HydroShare, http://www.hydroshare.org/resource/8b054e66289743f7b930358907e48f8e

This resource is shared under the Creative Commons Attribution-NoDerivs CC BY-ND.

 http://creativecommons.org/licenses/by-nd/4.0/
CC-BY-ND

Comments

There are currently no comments

New Comment

required