Oilfield water resource systems and methods for managing oilfield water resources are provided herein. In an embodiment, an oilfield water resource system includes a water storage pond and a second holding pond. The water storage pond includes an oilfield water resource to be provided for use in an oilfield operation. The second holding pond includes low value water different from the oilfield water resource in the water storage pond. The second holding pond is configured to influence relative humidity of air above a water surface of the oilfield water resource in the water storage pond.