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Implementation The Basin Roundtables will be critical to implementing recommendations produced by their non-consumptive needs assessments. The implementation objectives are summarized in the figure here. Water Supply Reserve Account and Technical Assistance Task Orders Requested by Basin Roundtables The tables on the following pages summarize Water Supply Reserve Account funding requests and the status of the 1400 Task Orders. Encourage watersuppliers to consider this information when planning their projects and processes Identify projects and processes to meet these needs Identify additions to other processes or projects developed to meet other needs that might also meet the nonconsumptive needs Identify and assist in securing funding forsuch projects and processes Ensure developmentand implementation of sufficient projects and processes to meet these nonconsumptive needs Water Availabili Stud of Colorado River and Tributaries ~ y Study Purpose Over the last decade Colorado has seen rapidly increasing demands placed on our water supply by both traditional consumptive and more recent non-consumptive (recreational and environmental) uses. By the year 2030 Colorado's population is expected to grow to about 7.1 million people (current estimates are approximately 4.5 million people). This population growth coupled with concerns over both the recent severe drought and projections of greater climate variability raises significant con- cerns over the water supplies Colorado has available to meet the needs of our citizens and the envi- ronment. The water availability study is intended to help Colorado make wise resource management decisions while acknowledging that there is a degree of uncertainty as Colorado moves into the future. The study is intended to answer what on the face seems an easy question: "How much water from the Colorado River Basin System is available to meet Colorado's current and future water needs?" The answer to that question will take into consideration the following factors. • Hydrolo~y- varies in time, location and amount. Agreement on how to consider these factors in a water availability study will be important to gain greater understanding and acceptance of the study conclusion. As described later in this scope the initial study phase will focus on issues in a period of known hydrology and a period extended from known hydrology. • WaterAvai/ability- will include both legal and physical supply considerations. Initially legal avail- ability will consider current demands. Water Use - water use consideration (also referred to as demands) should include existing absolute water rights. Water use can be measured in terms of consumptive use, gross diversions or total de- liveries. Categories of water use include municipal (domestic and commercial), industrial, agricul- tural, water rights for instream environmental flows and water rights for recreational in-channel diversions. The Study should examine: 1) how non-consumptive uses within the priority system may affect Colorado's ability to fully develop its consumptive use apportionment; and, 2) how much water would remain for non-consumptive uses if Colorado fully developed its apportionment. At various locations within the state initial water availability will be evaluated using the following formula: Water Availability = Physical Supply - Current Water Use (includes downstream demands) h~ ~-, ~ `<i-~: ~j ~~ . ~ . vy~s~ : _ Ar .'~F ,.~ °~ _ ~~: }: ~ ~ ~ { .:~ k ; L- J ~;i ?l ~ ~1~:~~ ~~ ~~ ,~~ s~~tir.~,,~i ~~... ; !: ~r~~~~~~. ~~:~~LIL~[rL4 -5-