Abstracts - Data Collection
The Cheslatta/Murray Hydrological Data Collection Project -
Summary Report 1989 - 1993 Volume 1 (RM93-1 vols.1 & 2)
Prepared by Frank Lebrero, Triton Environmental Consultants Ltd. March 1995
The Cheslatta/Murray Hydrological Data Collection Project (HDCP) was designed to provide
the database necessary so that a forecasting procedure could be implemented to estimate
flow contributions from the Cheslatta/Murray Lakes watershed. Knowledge of
Cheslatta/Murray Lakes inflows would permit optimization of the release of the Annual
Water Allocation from the Nechako Reservoir during the Long Term Flow Regime.
The goal of the Cheslatta/Murray HDCP was to establish the foundations of providing a
database to monitor climatic conditions and streamflow of an index basin, and to measure
snow pack in the Cheslatta/Murray Lakes watershed. This report summarizes site selection,
equipment installation, and data collected from 1989 to 1993. Additionally, this report
provides results of an analysis of collected data.In 1989/1990, the project involved selection of the Bird Creek drainage as an index
sub-basin, and installation of a climate station, a water level recorder on Bird Creek
near the outlet of Bird Lake and four snow course stations within the Cheslatta/Murray
Lakes watershed. The database developed consists of mean daily air temperatures, mean
daily relative humidity, accumulated total precipitation and stage and discharge
measurements within the sub-basin, as well as measurements of snow pack from four snow
course stations. These data are summarized into monthly and annual values in Volume 1.
Annual data obtained from relevant Environment Canada Atmospheric Environment Service
(AES) weather stations and Water Survey of Canada (WSC) gauging stations were compared to
relate the collected Bird Creek data to long term averages. Bird Creek daily weather
station data, mean daily stage and discharge data, as well as detailed snow course data
are presented in Volume 2.
It is recommended that data collected from this study be analyzed to determine a
relationship between the volume and timing of runoff from the Bird Creek index sub-basin
and the Cheslatta/Murray Lakes watershed. It is also recommended that Bird Creek data
collected in this report could be compared to data from other AES weather stations and
other WSC gauging stations to confirm the results relating the collected Bird Creek data
to the long term average.