Coeur d’Alene Lake, Idaho: Insights Gained From Limnological Studies of 1991–92 and 2004

Scientific Investigations Report 2008–5168

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2008–5168

Table 9. Inflow plume routing based on comparison of riverine inflow temperatures and water column temperature ranges at pelagic station 3, Coeur d’Alene Lake, Idaho, water years 2004–05.

[Station locations are shown in figure 1 . St. Joe River (USGS gaging station 12415140); Coeur d’Alene River (USGS gaging station 12413860). Abbreviations: °C, degrees Celsius; m³/s, cubic meter per second; USGS, U.S. Geological Survey; –, not analyzed]

Date of river sampling	St. Joe River		Coeur d’Alene River		Pelagic station 3		Inflow plume routing
Date of river sampling	Water temperature (°C)	Instantaneous discharge (m³/s)	Water temperature (°C)	Instantaneous discharge (m³/s)	Date of lake sampling	Water temperature range (°C)	Overflow	Interflow	Underflow
Water year 2004
10-08	14.9	11.9	14.4	12.5	10-22	6.6 –14.0	X
12-08	1.6	42.5	3.6	53.8	12-03	6.6 – 6.6			X
04-06	6.5	195	6.8	210	04-14	4.2 – 9.3		X
05-08	8.3	195	9.4	108	05-18	4.9 –12.9		X
06-08	10.8	139	11.8	87.8	06-22	5.7 –18.1		X
07-19	21.8	34.0	22.9	22.1	07-20	5.9 –22.6	X
09-01	17.4	14.2	17.3	4.39	08-25	6.1 –21.1		X
Water year 2005
10-12	12.9	15.6	13.4	18.7	10-20	6.5 –13.7	X
12-13	3.0	180	3.3	312	12-04	6.7 – 7.4			X
02-07	2.0	79.3	2.3	79.3	01-25	3.4 – 2.4	X
03-14	6.0	51.0	7.2	34.0	–	–
03-30	3.3	227	3.5	232	04-07	4.2 – 4.5	X
05-12	8.3	178	11.3	73.6	05-24	5.2 –12.5		X
06-27	19.1	42.5	18.8	21.0	06-14	5.2 –14.6	X
07-18	20.3	18.7	22.4	16.1	07-20	5.5 –21.3	X
08-25	20.8	7.65	21.0	3.96	09-01	5.7 –19.9	X

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