Table 1. Physical characteristics and hydrological environments at the study stations in the surveyed stations, Korea, 2023

St.	River width (m)	Water width (m)	Water depth (cm)	Bottom strusture (%)*						Water temperature (℃)	Conductivity (μs/cm)	DO (mg/L)	pH
St.	River width (m)	Water width (m)	Water depth (cm)	B	C	P	G	S	M	Water temperature (℃)	Conductivity (μs/cm)	DO (mg/L)	pH
1	10～15	3～4	20～80	30	30	30	10			17.5	75	10.3	7.6
2	100～120	30～40	20～80	20	30	30	10	10		17.8	126	9.8	7.8
3	20～30	3～8	10～30		20	30	30	20		23.5	139	8.4	8.1
4	30～40	2～3	10～30	20	30	20	30			18.6	97	9.3	7.8
5	50～60	3～5	30～100		20	30	30	20		21.4	161	8.9	7.4
6	80～100	10～20	5～10	30	30	30	10			22.7	186	8.2	8.2
7	120～150	40～50	30～60	10	30	30	20	10		26.5	179	8.9	7.3
8	20～30	5～8	10～50	20	30	30	20			19.1	106	9.9	7.1
9	50～70	10～12	10～40	10	30	30	20	10		22.0	115	9.7	7.2
10	40～60	3～5	10～100	10	40	30	10	10		18.4	98	10.2	6.9

B: boulder (>256mm), C: cobble (64～256mm), P: pebble (16～64mm), G: gravel (2～16mm), S: sand (0.1～2mm), M: mud (<0.1mm) - modified cummins (1962).