Table 1. Physicochemical and environmental (habitat) characteristics of the streams Gereb Tsedo, Elala and the common downstream of the two streams, Mariam Dahan and Romant fall

Variable	GerebTsedo (Ave. ± SD)	Elala (Ave. ± SD)	Mariam Dahan (Ave. ± SD)
Altitude (m)	2,071.6 ± 31.1	2,011.5 ± 8.01	1,899.5 ± 79.9
Water depth (cm)	39.0 ± 30.4	44.3 ± 34.47	40.1 ± 29.7
River bed width (m)	2.7 ± 1.6	3.5 ± 2.0	4.1 ± 3.0
Water transparency (Snell, cm)	20.8 ± 10.2	19.73 ± 9.73	19.5 ± 10.3
pH	7.4 ± 0.4	7.72 ± 0.28	7.5 ± 0.4
Conductivity (µS/cm)	142.6 ± 17.4	115.1 ± 22.8	106.3 ± 4.1
Chlorophyll a (µg/L)	57.3 ± 20.8	73.3 ± 26.2	62.2 ± 21.04
Dissolved oxygen (mg/L)	5.4 ± 1.9	7.1 ± 2.2	5.3 ± 1.74
Temperature (°C)	20.8 ± 1.7	21.5 ± 3.5	21.3 ± 2.6
Water flow velocity (m/s)	0.2 ± 0.1	0.127 ± 0.11	48.4 ± 34.0
% Macrophyte coverage	14.76 ± 16.17	18.36 ± 23.43	13.3 ± 8.1
% Riparian coverage	58.7 ± 29.0	33.4 ± 31.5	48.4 ± 34.0

Physicochemical and environmental characteristics were taken from 14 study sites; each site with 3 habitats (42 microhabitats × 3 seasons) of the streams and the average value and SD is presented.