| Abstract/Description or Keywords |
The results from the completed flow threshold analysis for the proposed Tailings Management Facility (TMF) are presented in this report. The analysis involved the determination of the instream flow thresholds using a long-term dataset. This was conducted as a first approximation to determine potential fish habitat and related aquatic losses due to the diversion of surface waters from the stream channels, as well to the construction of the TMF. The proposed TMF is to be located within the upper South Teigen and North Treaty Creek drainage basins; therefore, the analysis was conducted for both drainage basins. The instream flow thresholds can be identified using a long-term time series of synthetic flow discharges. In British Columbia, the provincial instream flow threshold guidelines recommend that a minimum of twenty years of continuous natural daily flow discharge records should be used for the analysis (Hatfield et al. 2003). However, a record of this length is generally not available for the majority of hydrometric monitoring stations in the province. Thus, synthetic periods of flow discharge records are usually constructed. |
