Table 3. Median standard lengths of larval catches and simulated median standard lengths at fixed sites in Upper Klamath Lake and the Williamson River Delta, Oregon, 2009. 


[Only sucker larvae less than or equal to 19 mm in standard length are included in the calculation. Abbreviations: N, number of fish caught; p50, 50th percentile; OSU, Oregon State University; TNC, The Nature Conservancy; USGS, U.S. Geological Survey; mm, millimeter; –, no data]


Near Williamson River channel												North delta			South delta			Upper Klamath Lake shoreline, north of mouth
TNC A			TNC B			USGS 25535			TNC D			USGS 25980			TNC C			USGS 25977			USGS 25976
N	p50 (mm)		N	p50 (mm)		N	p50 (mm)		N	p50 (mm)		N	p50 (mm)		N	p50 (mm)		N	p50 (mm)		N	p50 (mm)
Median measured lengths in nets at fixed larval catch sites
114	13.0		26	13.8		25	11.8		30	14.5		2	15.2		13	14.5		1	12.0		4	15.3
Median simulated lengths at fixed larval catch sites, scenario C
592	11.9		269	12.2		480	12.2		116	12.6		178	13.6		256	13.2		114	13.8		80	14.2

Williamson River mouth, offshore			Williamson River mouth, in channel			Upper Klamath Lake shoreline, south of mouth						Upper Klamath Lake			Agency Lake
USGS 25981			OSU U6			OSU U5			OSU U4			OSU U8			USGS 25978			USGS 25979			OSU A1
N	p50 (mm)		N	p50 (mm)		N	p50 (mm)		N	p50 (mm)		N	p50 (mm)		N	p50 (mm)		N	p50 (mm)		N	p50 (mm)
Median measured lengths in nets at fixed larval catch sites
22	12.7		98	12.6		18	14.3		10	14.1		2	16.7		0	–		1	11.9		16	13.2
Median simulated lengths at fixed larval catch sites, scenario C
127	14.2		210	13.1		403	13.5		452	13.6		4	17.1		84	14.7		17	15.7		10	14.9

First posted January 31, 2014