CB1 there is such data. Here is an example. Tell me what you are looking for and I will check. Be sure to check the author below. \:\)

North American Journal of Fisheries Management
Article: pp. 202–207 |

North American Journal of Fisheries Management 1994

Influence of Water Conductivity on Pulsed AC and Pulsed DC Electrofishing Catch Rates for Largemouth Bass
TRACY D. HILL and DAVID W. WILLIS

Department of Wildlife and Fisheries Sciences, South Dakota State University, Brookings, South Dakota 57007, USA

Abstract.—Electrofishing is a standard tool for sampling largemouth bass Micropterus salmoides, but high water conductivity hampers electrofishing effectiveness. Population estimates (Petersen method) were determined for largemouth bass in 12 small South Dakota impoundments with water conductivities ranging from 410 to 1,700 μS/cm. Even though pulsed DC catch-per-unit-effort (CPUE) values were obtained during the first electrofishing lap at each impoundment, pulsed AC catch rates from immediately following second laps were significantly higher (P = 0.002). The mean number of hours needed to collect 100 stock-length (20 cm) largemouth bass was slightly more than twice as high for pulsed DC as it was for pulsed AC. We developed a multiple-regression model to predict density from pulsed AC CPUE and water conductivity (R2 = 0.88, P = 0.0001). Pulsed AC CPUE contributed 81% to the model and conductivity contributed 7%; both variables had slopes that were significantly different from zero in the two-variable model (pulsed AC CPUE, P = 0.0001; conductivity, P = 0.027). This study suggests that pulsed AC may be more effective than pulsed DC for collecting largemouth bass in waters with moderate (e.g., 500 μS/cm) to high (e.g., 1,700 μS/cm) conductivity, and that pulsed AC CPUE and water conductivity can be used to predict largemouth bass density better than CPUE alone.