The following is a press release from the Clackamas County Sheriff's Office: 

Clackamas County Sheriff's Office Marine Patrol, American Medical Response and Sandy Fire Rescue personnel have responded to the Sandy River for a reported water rescue.

On Saturday, Oct. 31, at 2:31 p.m. rescue personnel were summoned to the Sandy River, near Mill Creek, when a witness reported that a man and a boy were swept down river while attempting to forge this section of the Sandy River.

At 2:45 p.m., responding rescue personnel reported one of the two missing - a young boy - had been located. The boy is reportedly safe and was found about 300 yards downstream from where he and his older male companion initially went into the water.

Rescue personnel have set up a search operation in the area of 39800 Southeast Fish Hatchery Road in Sandy, Ore.

Search and Rescue personnel continue scouring down stream to locate the missing older male adult. The adult was last seen being swept downriver on the Sandy River, near Mill Creek.

Additional information will be provided as soon as possible.
 

UPDATE: At 4:25 p.m. Saturday Clackamas County Swift Water Rescue Consortium members were recalled from the Sandy River search "due to impending darkness," according to a county press release.

According to the release, the Clackamas County Sheriff's Office has summoned a Search & Rescue Coordinator to the Sandy River. The coordinator will assess the ongoing rescue effort to locate a 55-year-old man still missing. Witnesses report the man was swept down the Sandy River earlier Saturday.

A 16-year-old youth also was swept down river. However, he has been located and in good physical condition.

A chaplain has been summoned to the scene to assist this rescued youth with his emotional needs.

Emergency Life Flight also participated in this search effort to locate the missing 55 year old and provide ground personnel with information from the sky. 

Land-rescue crews apparently are being called in to search along the river banks for the missing man.
 

UPDATE SUNDAY: At day break on Sunday the Clackamas County Sheriff's Office's search mission resumed along the Sandy River. An estimated 25-member search-and-rescue volunteer group scoured the Sandy River's banks. Volunteers came from Pacific Northwest Search & Rescue and Mountain Wave Communications.

Police now say that the missing man was swept down river while attempting to "forge the river while fishing with his 16-year-old son."

The son of the missing fisherman also was swept into what police said was a "swift-moving current." The son "was able to self-rescue an estimated 300 yards from his initial entry point into the water," according to a sheriff's office spokesperson.

Additional water rescue efforts are being run by the Clackamas County Swift Water Rescue Consortium, represented today by Sandy Fire, Clackamas Fire and the Clackamas County Sheriff's Office.

The group was hoping for assistance from a U.S. Coast Guard helicopter today, which had been summoned from Astoria, but KATU is told that that the flight was "delayed due to inclement weather conditions at the Oregon coast." Reportedly, the helicopter will fly up to help if weather conditions Sunday afternoon.

The morning search covered a 4-mile stretch of the Sandy River, from Cedar Creek downriver to Dodge Park. The next step is to search from Cedar Creek to Ox Bow Park - a total of 13 miles.