Klamath and Trinity River Intra-Gravel Water Temperatures, 2014 and 2015

Document Details:

Title: Klamath and Trinity River Intra-Gravel Water Temperatures, 2014 and 2015
Category: Technical Report
File: Magneson-et-al_2016_0214_Klamath-Trinity-Intragravel-Water-Temperature-Report.pdf
Updated Date: 31.01.2017
Author(s)/Source(s): Mark D. Magneson
Publication Date: 2015-Nov
Focal Topic: Water Temperature, Trinity River, Mainstem Klamath River
Location: Trinity River, Klamath Basin
Watershed Code: 180102
Abstract:

Temperature recorders were used to monitor water temperatures in spawning gravels (intra-gravel) and in the water column above spawning gravels (surface) in the Klamath and Trinity Rivers from September 2014 to late June 2015. Water temperature recorders were installed in areas having high densities of Chinook Salmon redds to assess potential differences in predicted embryo incubation and subsequent emergence timing calculated using intra-gravel versus surface water temperatures. In general, intra-gravel water temperatures were warmer in the fall and early winter and cooler in the spring than surface water temperatures. Findings of this study are important given the influence of intra-gravel water temperatures within redds on the development of salmonid embryos and the resulting influence on timing of emergence.

Keyword Tags:
Intra-Gravel, Klamath River, Trinity River, Chinook Salmon, Water Temperature