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<br />000588 <br /> <br />goals permits evaluation of existing data to determine which goals have <br />been accomplished and how the program should be modified to accomplish the <br />remaining goals. <br /> <br />The procedures used in this study are those that have been adopted for <br />standard use throughout the U.S. Geological Survey and are presented with <br />reference to the general framework shown by figure 3. Streamflow data are <br /> <br />Type of Data <br /> <br />Current Statistical characteristics Long Env I ron- <br />purpose of streamflow term mental <br /> Natural Flow : Requlated Flow <br /> Hi nor Principal Minor Principal <br /> streams streams streams streams <br /> .- <br /> E E <br /> <:T ~ <br /> on <br /> ~ ~ <br /> 0 0 <br /> 0 0 <br /> 0 0 <br /> - <br /> - - <br /> ~ ~ <br /> 0 0 <br /> 0 0 <br /> '" '" <br /> <br />Figure 3.--Diagram illustrating the framework for techniques of program <br />design. <br /> <br />classified into four types: <br /> <br />(1) Data serving current purposes of water management, <br />(2) Data required for the planning and design of water projects, <br />(3) Long-term streamflow data to define time trends, and <br />(4) Environmental data. <br /> <br />For the second type of data, streams are classified as natural or regulated, <br />and each of these classifications is further subdivided into principal or <br /> <br />9 <br />