Haystack Reservoir encompasses 240 surface acres in Oregon's high desert landscape, located about 20 miles north of Redmond and 2 miles east of Highway 97. Created in 1957 by an earthen dam, this irrigation reservoir offers a no-wake environment ideal for paddling, with motorized boats restricted to 5 mph.

The reservoir features multiple access points, including boat ramps at both the West Shore and East Shore campgrounds. The West Shore area provides boat trailer parking and a day-use area, while the North Shore offers a fishing pier. Rocky cliffs form the north shoreline, accessible only by boat or on foot.

Morning paddling typically offers the calmest conditions, as winds frequently pick up later in the day, creating choppy waters between the surrounding buttes. The reservoir provides excellent wildlife viewing opportunities, particularly for bird watching. Paddlers may spot osprey diving for fish, resident bald eagles in the large cottonwood trees along the south shore, and seasonal visitors including American white pelicans, common loons, and various grebes.

Water levels fluctuate throughout the season due to irrigation demands, which can affect launch conditions. The reservoir has experienced periodic algae blooms, particularly during warmer months, which can impact water quality. The surrounding terrain features sage and juniper, with views of Mt. Jefferson and Three Fingered Jack visible across the dam to the west.

Facilities include three campgrounds: West Shore (16 sites), East Shore (24 sites), and South Shore group sites. The West Shore area offers fresh water and restrooms. Day use requires a $5 fee.

Note that while the reservoir allows swimming, there are no lifeguards on duty. Anglers frequently share the water, as the reservoir is stocked with various fish species. For one weekend in August, the lake hosts drag boat races, during which normal no-wake restrictions are lifted.