Morris, who played Rivera’s love interest on “Glee,” said she and a “small group of friends” want to conduct an on-foot search to find the actress, who vanished while boating last week in Lake Piru in Ventura County.

“I understand your team is doing EVERYTHING in their power, but we are feeling helpless, powerless and want to help in any way,” Morris wrote to the Ventura County Sheriff’s Office on Twitter.

“I have left a message with the department of Rescue and Air today, and I will call again tomorrow. Thank you.” she continued.

The 33-year-old Rivera was reported missing Wednesday after she took out a rented boat with her 4-year-old son, Josey Dorsey, in the lake, about 56 miles northwest of downtown Los Angeles.

When they didn’t return to shore, her son was discovered alone on the vessel with Rivera nowhere to be found, authorities said.

Search crews are on day five of searching for Rivera, who is presumed to have accidentally drowned in the lake.