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~ Table ES-l, Summary of Potential Impacts of the Execution of the lA, Adoption of the lOP, and Implementation of Biological Conservation Measures (Page 5 of 29) '" " " n :::. ~. " ~ ~ ;! ::> ~ tTl '(l ~ .. No Action Impacts of Proposed Adion/AltCrnatlVl~ Rt:5ource/lssll~ tl '" - '" I - ::> :1 ~ ~ BIOLOGICAL RESOURCES-VEGETATION COi\chella Vallev Water Oistricl. Potenlialloss of Some facilities considered under the IA may still be Construction activities have the potential 10 caust" n<ltive vegetation from construction and constructed as part of the CVWMP, resulting in both temporary and permanent losses of native opera lion of new facilities and from increased impacts to biological resources that are similar to vegelation, depending on the exact location and groundwater levels. IhelA. extent of such activities. Increased groundwater levels would increase the levels of drain water, which is expected to maintain current riparian and marsh vegetation in the drains even if water conservation measures are implemented. The Melropolit<l.n Water Dislricl. No new No change to vegetation would occur. None. construction or changes in the operation of existing facilities. San Diego Count)' Water Authority. No new No change 10 vegetation would occur. None. construction or changes in the operation of existing facilities. Salton Sea. Potential loss of marsh and riparian The impacts identified tor the lA would occur, but The potential tor a more rapidly declining Sea level vegetation from decreased water levels of the at a slower rate. has the potential to result in the loss of marsh and Sallon Sea. riparian vegetation, especially in the southern portion of the Sea. The declining sea level could impact wetland and riparian vegetation along the drains, rivers and streams entering the Sea, as well as the confluence of the fresh waters with the Sea. Inadvertent Overrun Policy Potential impact to riparian and aquatic No change to vegetation would occur. Proposed lOP: Any yearly changes wilhin Ihe River vegetation from increases and decreases in the now would be within the historical hydrological Colorado River flow during select portions ot parameters of the River and are not expected to the 75-year time period. impact riparian and aquatic vegetation. No Forgiveness AlternMive: Similar to proposed lOP. N <:> <:> N ?= - o ~ ::> ~ ::>. :0 " Q - " ::>. ~ ::>. " , ~ ). ~ - o. ~ '" '" ... '" .. - ~ - .., ~ ~ ~ - - - BIl - - ~ ~ ~ I!IV