Fishing, boating, picnicking, and hiking are all available, although no swimming is allowed and restrictions on watercraft require you to either rent from the available fleet or have your boat cleaned, inspected and stored (all for a fee). Contact recreation area staff at 831-335-7424 for more information.
From the City of Santa Cruz::
Due to the concern regarding contamination of the lake with aquatic invasive species such as Eurasian mussel, private boat launch will be restricted to boats that are stored at Loch Lomond Recreation Area for the season.Fishsniffer.com has nice hand drawn map of the fishing spots. Go to bahiker.com for complete information on hiking trails including lots of pictures. Lompico.org has a great trail map here.
The Hours of Operations are:
Open daily March 1 through Labor Day, then weekends only though October 10
March: 7:00 a.m. - 7:00 p.m.
April: 7:00 a.m. - 7:30 p.m.
May: 7:00 a.m. - 8:00 p.m.
June: 7:00 a.m. - 8:30 p.m.
July: 7:00 a.m. - 8:30 p.m.
August: 7:00 a.m. - 8:00 p.m.
September 1 through Labor Day: 7:00 a.m. - 8:00 p.m
After Labor Day through October 10: 7:00 a.m. - 6:00 p.m.