Weather

Weather Underground #1

Lakefront at Lands End, Bee Rock, Lake Nacimiento, Bradley, CA US (site seems to be offline).

Weather Underground #2

Heritage Ranch.

Weather Underground #3

Running Deer.

WebCams

Oak Shores

Courtesy of Oak Shores Realty; choose "Click Here For Webcam".

805 Webcams
Includes some water level and dam data

Lake levels

CDEC Reservoir details

The link above will take you to the California Data Exchange Center, Water Resources Department

NRWMAC Site

More Dam and Reservoir data

Monterrey County Water Resources Agency

Robust data on reservoir levels, Dam data such as inflows, outflows, etc.