{"content":[{"text":"Notice of Intent","bbox":{"left":0.088235,"top":0.036374,"width":0.08894300000000001,"height":0.015114999999999996}},{"text":"SLDMWA","bbox":{"left":0.804861,"top":0.036374,"width":0.05392600000000003,"height":0.015114999999999996}},{"text":"effects of flow in Mud Slough have caused the normal water level to drop to approximately four \n feet below the Newman Lake water level. Therefore, hydraulic modification is required. \n Project Construction and Operation Summary: The Proposed Project is to deliver 1,663 acre-feet of \n water per year to Newman Lake from a combination of Los Banos Creek flows and Mud Slough \n flows, depending on hydraulic conditions at the time in both waterways. Excess flows in Newman \n Lake would flow out the existing spill dam at the north end of the Lake. \n A new diversion structure would be constructed in Mud Slough, approximately 300 feet \n downstream of the confluence with Los Banos Creek. The structure would span the width of Mud \n Slough to raise the water level in the slough in order to divert water into Newman Lake through a \n side channel connecting to Los Banos Creek. The structure would be designed as a reinforced \n concrete, broad-crested weir check with overshot spill structure to fine-tune upstream water levels \n and maintain downstream flow. The crest elevation would be designed to pass normal high flows \n without exceeding the Mud Slough channel capacity. High flows would spill and inundate primarily \n the easterly floodplain with localized inundation of seasonal wetland areas adjacent to the west \n bank of Mud Slough upstream of the proposed control structure, which is consistent with current \n conditions. An existing spill structure in Los Banos Creek would be removed. \n Minimal channel excavation would be required to key the diversion structure into the channel bed \n and banks. Modifications to the existing side channel connecting Los Banos Creek to Newman Lake \n include the installation of a new culvert and road crossing and the removal of accumulated silt for \n the initial 200 feet of the side channel at Los Banos Creek. The silt would be removed and spread \n along the adjacent levee. The total construction footprint (including staging area) is estimated to be \n 1.4 acres. Additional activities include the removal of five abandoned water control structures within \n the China Island refuge and the reinforcement of the existing Newman Dam at Mud Slough. \n The overshot gate would be managed to divert up to 1,663 acre-feet of combined Mud Slough and \n Los Banos Creek flow into Newman Lake via the side channel connecting Los Banos Creek to \n Newman Lake. A majority of the diversion, estimated to be 1,523 acre-feet plus another 40 acre-feet \n to offset seepage and evaporation, would occur during the fall-winter period (September 5 – \n January 10). Diverted flow would not exceed 10 cubic feet per second (cfs). In extremely dry years, \n Mud Slough flows would be insufficient to support both downstream flows and the entire Newman \n Lake water demand. When Mud Slough flows are less than 20 cubic feet per second (cfs), half of \n the flow would be devoted to Newman Lake water demands, and the remaining half would \n continue downstream. In situations where Mud Slough flow exceeds 20 cfs, the full diversion of 10 \n cfs would occur at Newman Lake; and the remainder would continue downstream. \n Outside the diversion period (January 11 to September 4), 100 acre-feet of water would be diverted \n as available for maintaining the water level in Newman Lake. The control gate in the Mud Slough \n diversion would be lowered (opened to allow all the flow through the structure) except during \n periods of short duration to allow replenishment water to be diverted to Newman Lake. This \n replenishment would occur monthly for a period of approximately seven days each time. The actual \n timing would depend on the water availability, but in no case would the diversion occur for more \n than seven days at a time during the summer period of operation (June through August). Flows \n would be maintained downstream equal to half of the total flow as during the primary diversion \n period. \n The Proposed Project would raise the water levels in Mud Slough between the new proposed \n diversion structure and Highway 140 when the overshot gate is raised during seasonal operations.","bbox":{"left":0.088235,"top":0.068146,"width":0.7704900000000001,"height":0.8580909999999999}},{"text":"2","bbox":{"left":0.08823,"top":0.948419,"width":0.006936999999999999,"height":0.01511499999999999}},{"text":"Mud Slough Restoration Project","bbox":{"left":0.678041,"top":0.948419,"width":0.180801,"height":0.01511499999999999}}],"images_bbox":[],"images_bbox_not_text_overlap":[]}