U.S. Geological Survey Scientific Investigations Report 2005

Use of Sediment Rating Curves and Optical Backscatter Data to Characterize Sediment Transport in the Upper Yuba River Watershed, California, 2001–03

Table 5

Measured bed load and predicted bed-load transport rates for two sites along Shady Creek in the upper Yuba River watershed, California.

[See figure 6 for location of sampling sites. ft³/s, cubic feet per second; tons/day, tons per day]

Sampling location	Sample number	Date	Time	Streamflow (ft³/s)	Measured bed-load transport (tons/day)	Rust Pit rating curve	Shady Road rating curve	Ratio (predicted/measured)¹
						Predicted bed-load transport rates (tons/day)
Rust Pit	RP-1a	02/17/02	09:00	10	0.7	0.2		29
	RP-1b	02/17/02	09:10	13	0.8	0.5		63
	RP-2a	04/28/03	11:20	22	14.3	2.3		16
	RP-2b	04/28/03	11:30	28	16.8	4.6		27
Above Old Hwy 49 Bridge	H49-1a	02/25/04	11:15	191	289.9		817.3	282
	H49-1b	02/25/04	11:50	196	480.5		817.3	170
	H49-2a	02/25/04	14:40	201	487.9		980.2	201
	H49-2b	02/25/04	15:09	207	267.7		980.2	366
	H49-3a	02/26/04	15:40	66	94.2		134.4	143
	H49-3b	02/26/04	16:16	72	214.4		134.4	63
	H49-4a	02/26/04	10:01	77	126.3		224.5	178
	H49-4b	02/26/04	10:19	80	89.2		224.5	252

¹Bed-load transport rates at the Above Old Hwy 49 Bridge site were predicted using the Shady Road rating curve