Elizabeth Crowther Thesis Proposal
February 24 @ 3:00 pm - 5:00 pm MST
The Drying of Dry Creek: Assessing variations in active drainage density in spring fed headwater streams.
Active stream channel networks expand and contract within geomorphic channel networks in response to climatic conditions. Relationships between the networks depend on watershed structural characteristics including underlying geology, climate, and topography. Flowing stream networks expansion and retraction has been looked at as the visible representation of these geomorphological conditions. However, the surface channel network can differ from the assumed geomorphic drainage density. Relating active channel network mapping to potential flow paths through isotope analysis can further improve our understanding on how groundwater characteristics influence surficial water expressions. Predicting stream behavior in low flow conditions can improve water resource management practices and help us further understand critical habitat in headwater catchments. The drying behavior of the Dry Creek Experimental Watershed offers a unique opportunity to assess connectivity in spring-fed and non-spring fed catchments with similar geologic and topographic profiles. This study will examine the influences of springs and groundwater interaction on active stream networks in headwater catchments. This work will be conducted through intraannual field mapping and oxygen isotope analysis to define groundwater flow paths and improve active drainage network predictive models.
Advisor: Jim McNamara
When: February 24, 2021
Time: 3:00 PM
Where: Zoom Meeting ID: 970 1306 0120