Physicochemical Parameters and Fish Assemblages in the Downstream River of a Tropical Hydroelectric Dam Subjected to Diurnal Changes in Flow

Table 1

Hydrological characteristics in the three segments of Batang Ai below the dam.

Parameter	Upstream			Middle stream			Downstream
	0840	1500	2000	0740	1020	1806	0940	1222	1530
Mean depth, m	0.55	0.90	0.96	1.22	0.89	2.17	0.79	0.96	0.72
Mean velocity, m/s	0.07	0.50	1.00	0.22	0.37	0.88	0.68	0.80	0.60
Flow, m^3/s	1.90	26.23	53.50	15.25	18.56	86.14	17.29	25.30	13.74