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Final Environmental Assessment: Improvement of Pearson Reservoirs

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The Pearson Reservoirs reservoirs, approximately dumbbell-shaped and consisting of a north reservoir and a south reservoir, are located near the center of Francis E. Warren Air Force Base FEW AFB Figure I. The reservoirs provide recreational opportunities for base residents and personnel while serving as a source of irrigation for the golf course. Opportunities for recreational day use include picnicking, non-motorized boating, hiking, bicycling, and wildlife viewing. Currently, the south reservoir has a boat ramp, fishing pier, individual picnic tables and grills, a large picnic pavilion, restrooms, and unimproved parking areas. The north reservoir has a boat ramp, fishing pier, picnic tables, and an unimproved parking area. An unimproved dirt road encircles both reservoirs. Several deficiencies are associated with the base reservoirs including inadequate depth, poor water quality, marginal conditions for fisheries, overgrown vegetation, and limited recreational opportunities. The water depth in each reservoir varies from approximately four feet in the south reservoir to eight feet in the north reservoir. Due to the extremely shallow depth, the south reservoir suffers from chronic water quality issues created by constant wave action churning the sediment in the bottom of the reservoir e.g., high turbidity and low oxygen. The shallow depth of the reservoirs also contributes to fish kills, due to low dissolved oxygen levels, during the summer months. Fluctuating water levels have caused a significant proliferation of cattails along the shallower portions of the reservoirs, especially along the western shoreline of the north reservoir. The proliferation of cattails around the reservoirs has severely limited access for fishing.

Subject Categories:

  • Logistics, Military Facilities and Supplies
  • Water Pollution and Control
  • Environmental Health and Safety

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