Laserfiche WebLink
s_ S and coordination with other agenc~ <br />hall coordinate with ~politan Water <br /> Distric~i 1 ling fu~s. . ' <br /> <br /> · Th~ ongoi gn program of. <br /> <br />FLOOD CONTROL AND DRAINAGE <br /> <br /> The most distinctive physical feature in the City of <br />Santa Aha is the Santa Ana River, with its associated flood' <br />plain, which traverses the City from the northern border to <br />the southwest. The river is the largest in Southern California, <br />extending one hundred miles inland and encompassing a drainage <br />basin of about 2,500 square miles. It is an intermittent river <br />whose flow is dependent upon the winter and spring rainfall <br />patterns. Historically, the river flooded the coastal plain <br />on several occasions prior to the completion of the Prado Dam <br />in 1940. However, the river bed has been modified to a width <br />of approximately 300 to 350 feet. The cross section has been <br />developed into a trapezoidal shape, with earthen levees raised <br />along either side.~ The river forms a definite barrier between <br />the western portion of Santa Ana and the remainder of the City. <br />within or adjacent to the City limits the river bed is bridged <br />by only 10 roads and two railroad lines. <br /> <br /> The Santiago Creek, tributary to the Santa <br />Ana River, flows generally east to west near the <br /> <br />! I II It <br /> <br /> <br />