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12.2.2 Social Reaches and Villages Report No 678-F-001 METSI CONSULTANTS: SUMMARY OF MAIN FINDINGS FOR PHASE 1 DEVELOPMENT The social reaches used in the IFR study are listed in Section 3. For the monitoring programme for Phases 1 and 2 combined it was proposed that some of the eight river reaches be combined and the total number of social responses required be reduced. The wool sheds and clinics sampled should remain those used in the IFR study (Section 3). A mitigation and compensation programme which deals effectively with negative changes brought about by reduced river flows will have to have its own monitoring programme to quantify resource use and the actual amounts of resource reduction. This monitoring would effectively cover the same issues as a social monitoring programme with an added emphasis on those issues of most importance from the perspectives of mitigation and compensation. This approach is used below in determining the required monitoring activities. 12.3. MAIN FEATURES OF THE IFR MONITORING PROGRAMME Three tiers of monitoring are recommended for the monitoring programme, viz.: pre-construction, baseline data collection; post-construction, release-specific data collection; post-construction, long-term routine monitoring. Summaries of the activities recommended in each tier are provided in Tables 12.1, 12.2 and 12.3, respectively. 12.3.1 Pre-Construction: Baseline Data Collection For the most part the data collected during the IFR study are adequate as a baseline against which to assess flow-related changes in the study rivers. However, in some instances additional data collection has been recommended. The aims of this baseline data collection would be to collect: additional biophysical data that have been identified as being necessary to address knowledge gaps and to be able to distinguish between future flow-related changes in the rivers and other changes; data required to address the statistical aspects of data collection, such as the minimum number of samples required. 12.3.2 Post Construction: Release-Specific Data Collection (Biophysical Only) The release-specific data collection should be confined to high flow events. The aims of the release-specific data collection would be to collect data that would allow an assessment of whether or not the rivers are responding to different components of the flow regime in the ways predicted. For instance, the fish specialist stated that withinyear high flows would provide cues for fish passage or spawning. Thus, release-specific data collection would aim at determining if fish spawning and migration did in fact occur in response to the release of such a high flow. Because of the purpose of the release-specific monitoring, it is envisaged that only biophysical data would be collected during this stage of the monitoring programme. The data from the release-specific collection activities would be used to fine-tune IFR releases, and refine predictions of future condition, if necessary. Since the sites closest to the LHWP dams would both be most affected by the flow changes, those sites should form the focus of the release-specific monitoring. 68
Report No 678-F-001 METSI CONSULTANTS: SUMMARY OF MAIN FINDINGS FOR PHASE 1 DEVELOPMENT 12.3.3 Post Construction: Long-Term Routine Monitoring The aims of the long-term monitoring programme should be to: verify that the IFR releases are being made; assess the condition of the rivers for comparison with the baseline data sets; assess the overall efficacy of the IFRs in meeting their objectives, and to provide data that can be used as motivation for adjusting the IFRs if necessary; evaluate whether the parameters selected for inclusion in the monitoring programme are appropriate, and whether the list of parameters should be increased on decreased. The data collected as part of the long-term routine monitoring would provide an indication of the condition of the study rivers as a whole. These data could identify potential problems, which may then require an additional investigation of cause as part of a different sampling effort. Table 12.1 Summary of activities required for baseline data collection. Component BIOPHYSICAL Tasks Where Data Should Be Collected Frequency Hydrology Continuous time-series stage- All gauging weirs as listed in Table Continuous. height data. 3.1. Hydraulics Installation or re-installation of missing beacons, checking existing ones, and development/ improvement of rating curves for all crosssections. All monitoring and reference sites. Once-off. Sedimentology None. Water Quality None. Riparian Vegetation Location of vegetation zones on cross-sections. All monitoring and reference sites. Once-off. Establishment of monitoring plots. All monitoring and reference sites. Once-off. Marking of individuals of key species. All monitoring and reference sites. Once-off. Algal monitoring. All monitoring and reference sites. Once-off. Macroinvertebrates Initial intensive survey All monitoring and reference sites. Once at the end of the wet season (autumn). Fish Initial intensive surveys All monitoring and reference sites. Four times in the first year. Birds Population counts All monitoring and reference sites. Once per annum. Mammals and herpetofauna Population counts All monitoring and reference sites. Once per annum. SOCIO-ECONOMIC Sociology None. Public health None. Animal health Collection and analysis of blood samples All study wool sheds. Annually, for two years. Faecal collections. All study villages. Twice a year. Collection of wool shed records. All study wool sheds. Annually. Collection of water quality data on All study rivers near to dip tanks Once-off. effects of dip tanks. and animal crossings from dip tanks. Epidemiological study of internal All monitoring sites plus reference Three times per parasites. sites year, for two years. 69
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