NSW Burrunjuck and Blowering, Snowy Hydro and water in downstream storages, now represent the total available water to the Murrumbidgee Valley
Posted by waterweek on 19 September 2007
A 17 September NSW Department of Water and Energy paper “Critical water planning for the Murrumbidgee Valley”, reported natural inflows into storages have receded to very low levels. Storage levels in Burrunjuck and Blowering together with assured inflows from Snowy Hydro and water in downstream storages, represent the total available water to the Murrumbidgee Valley.
Snowy storage unusually low: Allocation announcements were based on this total water availability, together with allowance for river losses, normal end of river system flows and water already used this year. A key difference bwteen water availability this year compared to other years, was that storage levels in the Snowy Hydro reservoirs are at critical low levels. There has been little rain fall across the Murrumbidgee Valley in the past 8 weeks and natural inows into the major storages. have receded to low levels.
From 15 August to 12 September 2007;
• Canberra received 20 millimetres (mm) of rain;
• Wagga Wagga received 12 mm; and
• Griffith received only 2 mm.
Spring melt and Snowy order raise flows: Total inflow into the Murrumbidgee Valley system in August was 62 gigalitres (GL). The inflow to the Snowy Hydro storages has continued to be above the inflows for the same period in 2006. Increased levels in Blowering Dam are largely due to releases from Snowy Hydro into the Murrumbidgee system.