The LRFEP oversees the Lake Roosevelt angler creel survey, which is conducted throughout the year and throughout the reservoir. Creel clerks survey anglers and record how many of each fish species were caught and harvested, how long the angler had fished that day, and allows creel clerks to directly collect lengths, weights, and to observe the presence of tags or marks. The collected information is used to characterize angler pressure and catch rates, which then allows fisheries managers to adapt to changes in angler activities. Survey data collected between 2010 and 2012 revealed that the majority of Rainbow Trout and kokanee observed by creel clerks were of hatchery origin. Overall, Rainbow Trout, Walleye, Smallmouth Bass, and kokanee are the most commonly caught species in Lake Roosevelt.