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Stream impoundment: comprehensive riverine effects on the Provo River, Utah


Authors: Suzanne Walther · Adriana Martinez
Owners: Suzanne Walther · iUTAH Data Manager
Resource type:Generic
Created:Aug 18, 2017 at 12:33 a.m.
Last updated: Jun 14, 2018 at 10:06 p.m. by Suzanne Walther

Abstract

This study focused on the geomorphological, ecological, and sedimentological impacts of the Jordanelle Dam Provo River, Utah. This particular study site provides a unique opportunity because the Jordanelle dam was put in place in 1992 and a large scale restoration project was completed in 2008, allowing for high resolution imagery and observations prior to dam placement and restoration. To monitor these effects, we established cross section study sites along the Provo River, with 5 above the dam and 5 below the dam. At each cross section, we measured baseline channel morphology characteristics via surveying and sediment size distribution via sediment collection and lab grain size analysis processing. We also inventoried vegetation characteristics along the river to monitor differences upstream and downstream of the dam. This data, combined with analysis of historical imagery and current high resolution imagery, enables us to identify geomorphic changes over time and evaluate the impacts of those changes on the post-engineered river system as it applies to current and future watershed management. Post-impoundment, we find that channels downstream of the dam have become more stable, allowing for vegetation colonization, as exhibited in land cover changes from bare soil to grass. This results in greater species richness owing to colonization of a more stable riparian zone, ultimately changing habitat conditions. Grain size increases below the dam, which is a known dam impact. This data is particularly important as Utah faces climate change and population growth, both of which stress water availability, and has the potential to inform and improve watershed management practices to result in both a healthy fluvial system and a sustainable water resource.

Subject Keywords

dam impacts,ecology,channel morphology,sediment dynamics

How to cite

Walther, S., A. Martinez (2018). Stream impoundment: comprehensive riverine effects on the Provo River, Utah, HydroShare, http://www.hydroshare.org/resource/bf8cc53dc6394cca91d096c5f6370956

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

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

Sharing status:

  • Public Resource  Public
  • Sharable Resource  Shareable

Coverage

Spatial:

 Coordinate System/Geographic Projection:  WGS 84 EPSG:4326
 Coordinate Units:  Decimal degrees
Place/Area Name: Provo River, Utah

Longitude
-111.4338°
Latitude
40.5592°

Temporal:

 Start Date:
 End Date:

Content

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Authors

The people or organizations that created the intellectual content of the resource.

Name Organization Address Phone Author Identifiers
Suzanne Walther University of San Diego
Adriana Martinez Southern Illinois University, Edwardsville

Credits

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
iUtah (NSF) Research Catalyst Grant 2014 1208732

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