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COLORADO RIVER RESERVOIRS PROPOSED INTERIM DPERATING CRITERIA NOTE: Bold .type denotes changes from one step to the next within an interim criteria proposal. Nonnal Year Water Consumption Lake Mead Storage Eley. lake Mead Storage Contents lake Mead storage ab Min Power S-year Drought Frequency Lake Mead EIeY at end S-year Drought Califomia CU Limit Colorado River Aqueduct Nevada CU limit SNWANeeds Arizona CU limit Proposed Rule Partial M&I Surnlu!Il: Water Consumption lake Mead Storage Eley. Lake Mead Storage Contents Drought Frequency Lake Mead Eley at end S-year Drought California CU limit Colorado River Aqueduct Nevada CU limit SNWA Needs Arizona CU limit Surplus Uses Full M&I Surnlus Water COnS\:lmption lake Mead Storage Elev. lake Mead Storage Contents Drought Frequency Lake Mead Eley at end S-year Drought California CU limit Colorado River Aqueduct Nevada CU limit SNWA Needs Arizona CU limit Surplus Uses SurnllJ!O; based on SDace Ruildina Water Supply Water Consumption Lake Mead Storage Elev. lake Mead Storage Contents ~- Current Criteria 7.5maf notspecifred not specified notspecffied notspecffied notspecifred 404maf full, unused apportionment .3maf full 2.8maf not included not included one factor in deciding on surplus =--- fii_~tate Interim Criteria 7.5maf 1125 or less 13.569maforless 3.8maf 33rd percentile 1083 (Min Power) 4.4maf less than full .3maf less than full 2.8maf greater than 7.5 maf demands less conservation opportunites 1125 to 1145 13.569 mafto 15.585 mat not specffied not specffied 4.4 maf + approx. 250,000 1.212 maf-250,OOO af .3 mat + 1\2 excess M&1 demand less than full 2.8maf Resbicted to M&1 only, no storage greater than 7.5 maf demands less conservation opportunites 1145 upto flood control 15.585 maf or more not specified not specified 4.4 mat + excess M&J demand (.550 mat) full (1.212maf) .3 maf + excess M&I demand fully satisified 2.8maf Restricted to M&I only, no storage "R70 Runoff exceedance" or 17.331 maf runoff into lake Powell greater than 7.5 maf demands less conservation opportunites not specified not specified California Interim Criteria 1088 or less in 2001 to 1098 in 2015 10.5 MAFor less in 200110 11.3MAF in 2015 71111 11711 77?11 level 3 Surnlus based on lake Mead Triaoers greater than 7.5 maf demands, conservations measures implemented + 100,000 Triggers adjust 1'\1% change in UB demand below leval2 & ab 1088 in 2001 to 1098 in 2015 below level 2 & ab 10.5 MAF in 2001 to 11.3 MAF in 2015 not specified not specified 404maf+ 1.212 MAF .3 MAF + 2.8 MAF + Restricted to M&I & Indian only, no offstream storage or Ag Surplus levAI 2 Surnlus based on lake Mead Triaaers greater than 7.5 maf demands,conservation measures implemented Triggers adjust 1'\1.1% change in UB demand below level 1 & ab 1116 in 2001 to 1125 in 2015 below level 1 & ab 13 MAF in 2001 to ab 13.9 MAF in 2015 4.4 maf + excess M&I demand (.550 mat) full (1.212maf) .3 mat + excess M&I demand fully satisified 2.8maf Restricted to M&I only, storage limited to M&I, No Ag. Surplus level 1 Surnlus based on I ake Mead Triaaers 117?? Trigger adjusted 1'\1.7% change in UB demand greater than 7.5 mat demands less conservation opportunites 1160 in 2001 to 1166 by 2015 17.6 MAF in 2001 to 18.4 MAF in 2015 PAGE 1 03/1312000 Environmental Criteria 112004 to year 2015 1304maf 34th percentile 1083 If above 112004 release at least 32,000 afto Della Same as 6-State Same as 6-State No offstream storage, groundwater banking or Ag. 70A1 CRINTERIMOPCRIT