Hayward Flat is one of Trinity Lake's most popular campgrounds, offering 98 shaded campsites across five loops with direct lake access ideal for water sports and fishing.

The campground features a swimming beach by the Elderberry Loop, a nearby boat ramp and marina (3 miles away), flush toilets, food storage lockers, and picnic tables, with sites accommodating RVs up to 40 feet.

Open May 16–September 11, sites range from $30–$60/night and are available through Recreation. gov reservations or first-come, first-served; note that low water levels in late summer can create rocky, steep shorelines affecting lake access.