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<br /> <br />GUNNISON BASIN PLANNING MODEL <br />Flowchart of General Solution Procedure <br /> <br />.~ <br />G::>' <br />C>- <br />~. <br />~ <br />err. <br />c;i,> <br /> <br />Start Month <br /> <br />Assume maximum possible (or most <br />likely) immediate return flows for month <br /> <br />Assume no "Contract" releases (for instream <br />flow purposes) and no "Operational" releases <br />(for power/flood control purposes) <br /> <br />r-------------------------.---------. <br /> <br />STEP 1 <br />Water Rights <br /> <br />Outer loop re-computes all <br />allocations, deliveries, and <br />releases, based on most recently <br />computed immediate return flows, <br />until return flows are stable <br /> <br />(The number and <br />sequence of Water <br />Rights and Project <br />Delivery steps is <br />determined by the <br />UVWUA protocol.) <br /> <br />STEP 2 <br />Project Deliveries <br /> <br />DOPROJCTMOD <br />DoProjectDeliveriesStep() <br />Ch~ckProjectDeljveriesO <br /> <br />Inner Loop fe-computes water rights <br />diversions, project deliveries, and <br />operational releases based on previous <br />contract and operational releases, until <br />operational releases are stable <br /> <br />o <br /> <br />CRAMHOOKMOD <br />Set New fmmedRetumFfowsO <br /> <br />(Contract Releases are <br />computed only on the first <br />pass through the inner loop, <br />each time the outer loop iterates.) <br /> <br />STEP 3 <br />Contract Releases <br />(for instream flows) <br /> <br />GUNFRCSTMOD <br />SelNewOpsRelease() <br /> <br />RTFLOWMOD <br />SloreRetumFlows() <br />SetRetumFfowsO <br />Change/nRelumFlows() <br /> <br />Set "operational" releases and compare with <br />previously assumed operational releases <br /> <br />@ <br /> <br />STEP 4 <br />Augmentation <br /> <br />STEP 5 <br />Replacement <br /> <br />Set immediate return flows and compare with <br />previously assumed immediate return flows <br /> <br />@ <br /> <br />STEP 6 <br />Compact Deliveries <br />andlorFinal Flow <br />Distribution <br /> <br />ITERATION DECISION POINTS: <br /> <br />o <br /> <br />Check for demands which are not immediately downstream of a reservoir or have an <br />intervening capacity limitation which would prevent physical delivery of the allocated <br />project water. If the project does not receive the water released by the reservoir then <br />the project's release arc and the demand's delivery gate are both reduced and the step is <br />run-again. ~-tote~compared-to.tha.sum.of_the-absoll tUt \,~llltllC! .oUhe.shorlages.___ <br /> <br /> <br />I DOPROJCT.MOD: DoProjectDeliveriesStep, Check Project Deliveries <br /> <br />@ <br /> <br />Iteration of the inner loop is based on the change in operational releases from the reservoir <br />from one iteration to the next. The change in operational releases is calculated as the <br />absolute value of the changes in minimum releases or flood control releases. <br /> <br />End Month <br /> <br />NOTE: Convergence of this loop is affected by up-stream reservoirs dumping water to <br />downstream reservoirs which would then need to make a larger flood control release. <br /> <br />GUNFRCST.MOD: SetNewOpsRelease 0 <br /> <br />@ <br /> <br />This is based on the change in the absolute value of the differences of the immediate <br />return flows. <br /> <br />CRAMHOOK.MOD: SetNewlmmedReturnFlowsO <br />RTFLOW.MOD: StoreReturnFlowsO, SetReturnFlowsO, ChangelnReturnFlowsO <br />