Summary of Habitat and Fish Monitoring Data from East Fork and Upper Mainstem Lobster Creeks: 1988-2018

Identification Information

Citation

Originator: Lorion, Chris and Erik Suring

Publish Date: 2019

Online Link: https://odfwlcm.forestry.oregonstate.edu/

BPA Project #:

Contact Information

Agency: Oregon Department of Fish and Wildlife

Name: Erik Suring

Job Position: Salmonid Life Cycle Monitoring

Telephone: 541-286-5328

E-Mail Address: erik.suring@odfw.oregon.gov

Description

Abstract: Since 1988, the Oregon Department of Fish and Wildlife (ODFW) has monitored juvenile salmonid summer abundance, smolt abundance, adult spawner abundance, and stream habitat parameters in East Fork and Upper Mainstem Lobster Creeks of the Alsea watershed (Figure 1). The primary purpose of this monitoring is to study the effects of stream habitat modification on the freshwater survival and abundance of coho salmon (Oncorhynchus kisutch). This work has been partially funded by the Bureau of Land Management’s (BLM) Salem District Office since 1996. The purpose of this report is to provide the BLM with an update of ODFW’s sampling in East Fork Lobster Creek (East Fork) and Upper Mainstem Lobster Creek (Upper Mainstem) during the 2017-18 sampling season and to put these data in context with past data collected by ODFW. The watershed characteristics of the two study streams are shown in Table 1. In 1991, extensive in-stream habitat modification was conducted by the BLM in Upper Mainstem as part of a before-after-control-impact (BACI) study to determine the effect of habitat modification on the survival rate and smolt abundance of juvenile salmonids. East Fork acted as the control stream during this study, which lasted from 1988 through 1995. A detailed description of this study is in Solazzi et al. (2000). During a February 1996 flood, a number of large debris torrents entered Upper Mainstem and significantly impacted the habitat structures, resulting in the loss of considerable overwinter habitat for juvenile coho salmon. Similar high stream flows in the winter of 1998-99 caused significant channel changes in East Fork. In the summer of 1999, the BLM used 65 pieces of large wood with a total volume of 265m3 to create seven in-channel debris jams in East Fork.

Purpose: Western Oregon Research & Monitoring Program. Oregon Department of Fish and Wildlife for the Bureau of Land Management.

Time Period of Content: 1988-2018

Geographic Extent: Lobster Creek and EF Lobster Creek

Status: Final

Use Constraints:

Format: PDF file

Data Quality Information

Lineage-Source:

Data Information

Population	Indicators	Metrics
Alsea River Coho	Juvenile outmigrant abundance	Total smolt outmigration

Entity and Attribute Information

Attributes Description: Field attribute information is available in the attached file(s).

Is a physical copy maintained for reference at Headquarters? No