ANN ARBOR The Washtenaw County Sheriffs Office has issued a swift water safety warning following recent heavy rainstorms in the area. Members of the public who engage in recreational activities on any rivers or streams are urged to exercise extreme caution. Recent rainfall in Washtenaw County and surrounding areas has elevated water levels and increased current speeds. In these conditions even water that may appear calm can have strong currents under the surface. The Washtenaw County Sheriffs Office urges members of the public to keep these safety protocols in mind:The Marine Patrol recommends that anyone engaging in water activities wear a life jacket.