3100

• UCREFRP Catalog Number: 3100
• Author: Valdez, R. A.
• Title: Cataract Canyon Fish Study ‎(Fisheries Biology and Rafting)‎
• USFW Year: 1985.
• USFW - Doc Type: Final Report.
• Copyright Material: NO

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2-1

2.0 METHODS

2.l Trip Dates

A total of 6 collecting trips were conducted through Cataract Canyon in
1985, including 2 in July, 2 in August, 1 in September, and 1 in October.
Each tri p was schedul ed for 7 days, incl ud ing 1 to 2 days of travel and 5 to
6 days on the river.

Launc h sites were al ternated between Potash on the Colorado Ri ver and
Mineral Bottom on the Green River after the second trip to enable sampl ilng
of the respective rivers above the confluence. A 1 ist of launch and takeout
dates (time spent on the river), as well as launch sites, for each trip is
presented in Table 2-1.

Table 2-1. A list of launch and takeout dates as well as launch sites for
each of the 6 Cataract trips.

Trip La u nc h - Takeout Dates Launc h Site
1 7/10 - 7/15/85 Potash
2 7/24 - 7/28/85 Potash
3 8/07 - 8/11/85 Mineral Bottom
4 8/24 - 8/29/85 Po ta s h
5 9/21 - 9/26/85 Mi nera 1 Bottom
6 10/08 - 10/13/85 Po ta s h

2.2 Personnel

A total of 24 different people, representing 5 organizations,
participated in the 6 Cataract trips. Each trip consisted of 6 to 8 peOplE!.
The core crew on each trip was 2 biologists from USBR, 2 boatmen/biologists
from ERI (Ecosystems Research Institute), and 2 boatmen/cooks from TAG (Ta9-
A-Long Tours). Other organizations represented included Utah Division of
Wildlife Resources (UIl4R), and Utah Division of Parks and Recreation (UDPR).
A complete list of all personnel on each trip and the organization
represented is presented in Tabl>e 2-2.