Baseline juvenile
Chinook population data have been collected on the Merced
River with rotary screw traps stationed at Hagaman County Park (RM
12) from 1998 - 2003.
In January 2007, U.S. Fish and Wildlife Service Anadromous Fish Restoration
Project (AFRP) re-initiated this effort at a lower
river site, George J. Hatfield State Park (RM 2).
The bulk of the funds for this project is from CAMP
(Comprehensive Assessment & Monitoring Program). Traps were installed on January 23rd and intermittent sampling
began the same day
(Figure 1). On February 5th, we began sampling seven days a week (Figure 2).
Figure 1. Installation of the Rotary Screw Traps at
Hatfield State Park (RM 2).
[Click on photo for
Enlarged View]
Figure 2. Rotary
screw traps at George J. Hatfield State Park.
[Click on photo for
Enlarged View]
Zero Chinook salmon were
collected
during this sampling period. However, some
non-target species were collected including: channel catfish,
bluegill sunfish, riffle sculpin, and prickly sculpin
(Figure 3).
Figure 3.
Prickly sculpin (SL: 95 mm) captured
on February 8th.
[Click on photo for Enlarged View]
Zero O. mykiss
were collected during this
sample period.
Sampling
Period: January 22 - February 11, 2007
