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4. both stations at 15-30 min intervals until after sunrise, when fish retreated back to their daytime hiding places. We also periodically checked fish locations during the day. CHLP was also mapped as part of the telemetry work. Existing bathymetric data existed, however, it needed to be updated and we wanted to see if submergent vegetative cover could also be assessed. The work was conducted during the week of July 21, 2003 by Ken Bovee (Map 1). Depth data was collected by boat using a BioSonics DT -4000 echo sounder that had a mobile and base station GPS to track coordinates and develop the data base necessary for the map. Results and Discussion Telemetry data are still being analyzed, however, some trends were obvious. All study fish moved during the course ofthe study; there was no evidence to suggest any mortalities occurred during the study. Some fish frequented open water almost every night while others did not. Study fish always spent daylight hours inside the high levee (Photos 2 & 3). Weak and changing signal strength suggested fish were penetrating the levee several meters and were possibly moving around inside the rock passages. Individuals also exhibited a high degree of fidelity to specific zones or cavities. Photos 2 & 3. Probing the crevasses oflarge riprap along the high levee to locate cavities where adult bonytail hide during daylight hours in Cibola High Levee Pond. ' None ofthe fish were detected outside of the levee during daylight hours. Typically, fish did not leave their refuge before 30 min after sunset and returned no later than 30 min before sunrise. While fish moved throughout the pond, some individuals appeared to prefer specific areas. We discovered that the disturbance of an outboard motor or even rowing caused these fish to retreat back into the riprap. Bonytail were quite sensitive to any type of disturbance. 5