Checking for non-preferred file/folder path names (may take a long time depending on the number of files/folders) ...

Hydrogeology and Trout Health, Southeastern Minnesota


Authors:
Owners: This resource does not have an owner who is an active HydroShare user. Contact CUAHSI (help@cuahsi.org) for information on this resource.
Type: Resource
Storage: The size of this resource is 5.0 MB
Created: Jun 03, 2020 at 5:12 p.m.
Last updated: Sep 01, 2022 at 5:13 p.m. (Metadata update)
Published date: Sep 01, 2022 at 5:13 p.m.
DOI: 10.4211/hs.eeb01113e8ac45d4903ffeb5092fbcd3
Citation: See how to cite this resource
Sharing Status: Published
Views: 596
Downloads: 4
+1 Votes: Be the first one to 
 this.
Comments: No comments (yet)

Abstract

The recent discovery of resurgent brook trout populations – brook trout present in 68% of southeastern Minnesota streams compared to only 3% in the early 1970s - has led to an increased interest in documenting and improving critical habitat for this native species - the most temperature-sensitive of southeastern Minnesota’s trout population. Many of the brook trout analyzed were not associated with known hatchery sources, leading investigators at the Minnesota DNR and University of Minnesota to focus on potentially remnant lineages that have proven their ability to sustain themselves in this region (Hoxmeier, Dieterman and Miller, 2015). Brook trout often display distinct distributions along stream reaches, thought to be caused by stream temperature, discharge, competition with brown trout, or a combination of all three. Previous groundwater and geologic investigations, funded in part by the LCCMR, have shown that specific layers within the bedrock provide greater groundwater flow. Stream reaches that cross these layers are subject to greater groundwater inputs, increased base flow and lower temperature along and downstream from these reaches thus providing habitat conditions supportive to brook trout.

The goal of this project is develop a workable temperature sensing methodology and apply the methodology to candidate trout stream reaches to quantify the changes in temperature, flow, and trout distributions that occur along them. Advances in temperature measurements using fiber optic cables (distributed temperature sensing, DTS) allow temperature to be recorded through time at regularly spaced intervals, over distances of 1 to 2 kilometers. Stream reaches to be measured will be chosen based on geologic mapping by the Minnesota Geological Survey, focusing in areas where different geologic conditions exist and information on trout distribution and abundance are available. To date, DTS installation, temperature data collection and fish population sampling have been completed at East Indian Creek in Wabasha County.

Data available by contacting ctemps@unr.edu

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
East Indian Creek
Longitude
-92.8228°
Latitude
44.5618°

Temporal

Start Date:
End Date:

Content

How to Cite

OSU-UNR, C., R. Tipping (2022). Hydrogeology and Trout Health, Southeastern Minnesota, HydroShare, https://doi.org/10.4211/hs.eeb01113e8ac45d4903ffeb5092fbcd3

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

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

Comments

There are currently no comments

New Comment

required