Neighboring Creeks Alameda Creek -- The Alameda Creek watershed is the largest drainage in the southern San Francisco Bay region, encompassing almost 700 square miles. The watershed begins in remote wildlands and ends in the bay shoreline cities of Fremont, Newark, and Union City. See Alameda Creek Alliance. San Leandro Creek -- Flows from Huckleberry Botanic Regional Preserve southeast through Upper San Leandro Reservoir, then west through Lake Chabot and San Leandro to empty into the bay. See Friends of San Leandro Creek. Sulphur Creek (Hayward) -- Flows through Sulphur Creek Park in northeastern Hayward, in underground storm drains (built in the 1920s) across much of Hayward, through the Hayward Air Terminal and south of Skywest Golf Course, then enters the bay. Most of the flow in Sulphur Creek was diverted to San Lorenzo Creek in 1962 to prevent flooding in downtown Hayward. Now only the highest flows spill into the original streambed. The Hayward Area Recreation and Park District operates the Sulphur Creek Nature Center. Ward Creek (Hayward) -- Flows from hills northeast of California State University, Hayward, westward through Hayward Memorial Park, vanishes into storm drains for a considerable distance, and reappears near Jackson St. and Soto Road to flow southward to about Folsom Ave. before vanishing again, presumably eventually draining into Alameda Creek. This engineered course probably is not close to the creek's original path. The Hayward Area Recreation and Park District maintains the "Greenbelt Trails" in Ward Creek Canyon. Ziele Creek -- Flows from just north of the northwestern part of Garin Regional Park (maintained by the East Bay Regional Park District), through the park, then northwestward and into Holy Sepulchre Cemetery. It then disappears into storm drains, probably now emptying into Ward Creek, although this may not have been its original destination. See photos.