USGS Scientific Investigations Report 2010–5038Suspended-Sediment Budget for the North Santiam River Basin, Oregon, Water Years 2005

Table 5. Suspended-sediment budget computations, upper and lower North Santiam River basin, Oregon, water years 2005–08.

[Station reference: Complete station names are shown in table 1 and locations are shown in figure 1. Annual SSL is the estimated suspended-sediment load at the monitoring station. Percentage of total is the portion of the total SSL contribution to Detroit Lake from the basin upstream of the monitoring station. SSL, suspended-sediment load. na, not applicable]

Station reference	Water year								Total 2005–08
	2005		2006		2007		2008		Total 2005–08
	Annual SSL (tons)	Percentage of total	Annual SSL (tons)	Percentage of total	Annual SSL (tons)	Percentage of total	Annual SSL (tons)	Percentage of total	Annual SSL (tons)	Percentage of total
Suspended-sediment contribution to Detroit Lake
North Santiam	3,100	42	52,600	61	90,200	76	13,400	54	159,300	67
Breitenbush	2,640	36	23,800	27	23,400	20	7,870	31	57,710	24
Blowout	1,620	22	10,200	12	5,320	4	3,730	15	20,870	9
Annual SSL for Detroit Lake (tons)	7,360		86,600		118,920		25,000		237,880
Suspended-sediment contribution for North Santiam River at Geren Island
Niagara	970	9	11,800	30	13,800	15	7,830	39	34,400	22
Rock	na	na	4,640	12	12,300	14	1,520	8	18,460	12
Little North	9,750	91	23,000	58	63,400	71	10,600	53	106,750	67
Annual SSL for North Santiam River at Geren Island (tons)	10,720		39,440		89,500		19,950		159,610

Suspended-Sediment Budget for the North Santiam River Basin, Oregon, Water Years 2005–08