Chełkowski Z., Chełkowska B., 1986. An inventory of salmon (Salmo salar L.) spawning grounds in the drainage basin of the Drawa, a 4-th order tributary of the Odra. Acta Ichthyol. Piscat. 16 (1): 39-46.
Salmon spawning grounds were counted in the rivers Drawa and Płociczna within 1977-1983. From 0 to 44 and from 3 to 22 spawning grounds per year were recorded in the Drawa and Płociczna, respectively.