Maintain diversity of riverbank isolation from the wider water regime. vegetation. Reduce extent and impact of weeds. Maintain continuity and cover of riverbank vegetation. Enhance the extent and diversity of aquatic vegetation. Macroinvertebrates Trophic structure and diversity with As above. As above. a more balanced representation of all functional groups. Ausrivas O/E scores = Band A. Biomass equivalent to rivers elsewhere (e.g. Ovens). Maintain dynamic, diverse food webs that support higher organisms and contribute to river health. Native fish Suitable in-channel habitat for all As above. As above. life stages. Suitable off-channel habitat for all life stages. Passage for all life stages. Cues for adult migration during spawning season. Access to floodplain and habitats for spawning and/or larval rearing. Low flows recruitment and survival. Floodplain and bench inundation for exchange of food and organic material between floodplain and channel. Geomorphology Maintain natural rates of sediment Existing monitoring is Additional monitoring can be dynamics (erosion and deposition) appropriate for larger considered to evaluate and natural patterns of geomorphic channel-forming events (i.e. sediment movement and diversity. approaching bankfull pool depth for smaller flow discharge). freshes. Phytoplankton, Phytoplankton, periphyton and None. Additional monitoring is periphyton and macrophyte production rates, required. macrophyte biomass levels and community production composition more resembling sites to support dynamic, diverse food webs. The GB CMA is investigating options to use the volume stored in Goulburn Weir to release flows to coincide with natural flow peaks along the Broken River, thereby providing enhanced flows in the Lower Goulburn River downstream of Shepparton. The volume released from Goulburn Weir would then require some supplementing from Lake Eildon releases. This would involve some operational adjustments, such as managing deliveries along the irrigation channels supplied from Goulburn Weir. This is currently being considered by the GB CMA, but may only be feasible during winter. If the use of Goulburn Weir is not possible, opportunities to deliver the desired
Maintain diversity of riverbank vegetation. Reduce extent and impact of weeds. Maintain continuity and cover of riverbank vegetation. Enhance the extent and diversity of aquatic vegetation. isolation from the wider water regime. Macroinvertebrates Trophic structure and diversity with a more balanced representation of all functional groups. Ausrivas O/E scores = Band A. Biomass equivalent to rivers elsewhere (e.g. Ovens). Maintain dynamic, diverse food webs that support higher organisms and contribute to river health. As above. As above. Native fish Suitable in-channel habitat for all life stages. Suitable off-channel habitat for all life stages. Passage for all life stages. Cues for adult migration during spawning season. Access to floodplain and habitats for spawning and/or larval rearing. Low flows recruitment and survival. Floodplain and bench inundation for exchange of food and organic material between floodplain and channel. As above. As above. Geomorphology Maintain natural rates of sediment dynamics (erosion and deposition) and natural patterns of geomorphic diversity. Existing monitoring is appropriate for larger channel-forming events (i.e. approaching bankfull discharge). Additional monitoring can be considered to evaluate sediment movement and pool depth for smaller flow freshes. Phytoplankton, periphyton and macrophyte production Phytoplankton, periphyton and macrophyte production rates, biomass levels and community composition more resembling sites to support dynamic, diverse food webs. None. Additional monitoring is required. The GB CMA is investigating options to use the volume stored in Goulburn Weir to release flows to coincide with natural flow peaks along the Broken River, thereby providing enhanced flows in the Lower Goulburn River downstream of Shepparton. The volume released from Goulburn Weir would then require some supplementing from Lake Eildon releases. This would involve some operational adjustments, such as managing deliveries along the irrigation channels supplied from Goulburn Weir. This is currently being considered by the GB CMA, but may only be feasible during winter. If the use of Goulburn Weir is not possible, opportunities to deliver the desired
ewater-delivery-lower-goulburn-river.docx