Table 1. Water budgets and mean annual water budget, Coeur d’Alene Lake, Idaho, water years 2000–2005.

[Locations of sites shown in figure 1. Numbers in parentheses are station numbers listed in table 2. Abbreviations: mi², square mile; in., inch]

Tributary or budget component	Site No.	Station No.	Drainage area (mi2)	Yield (in.)	Water budget
					Water year						Mean annual, 2000–2005
					2000	2001	2002	2003	2004	2005
Inflow (million cubic feet)
Coeur d’Alene River near Harrison	S1	12413860	1,475	20	86,671	33,281	104,170	57,919	61,439	67,520	68,500
St. Joe River near Chatcolet	S2	12415140	1,720	20.7	104,897	41,208	116,893	79,166	78,522	75,418	82,684
Plummer Creek near Plummer	S3	12415250	43.4	7	900	354	1,003	679	640	647	704
Fighting Creek near Rockford Bay	S4	12415285	15.0	9.6	428	168	477	323	305	308	335
Carlin Creek near Harrison	S5	12415290	10.8	10	319	122	385	214	220	229	248
Wolf Lodge Creek near Coeur d’Alene	S6	12415350	39.4	12.8	1,508	579	1,823	1,013	1,040	1,085	1,175
Precipitation					3,165	3,057	2,957	3,216	3,226	3,067	3,267
Ungaged tributaries			447	9.8	10,197	10,197	10,197	10,197	10,197	10,197	10,197
Outflow (million cubic feet)
Spokane River near Post Falls (adjusted for effluent)	S7	12419000	3,840	21.9	216,936	84,335	246,239	148,861	146,057	149,783	165,369
Evaporation					3,146	2,502	2,540	2,416	2,906	2,893	2,483
Consumptive water use (surface-water and groundwater uses)					265	265	265	265	265	265	265
Storage change (Coeur d’Alene Lake at Coeur d’Alene) (negative means a net gain, positive means net loss)	L7	12415500			-251	231	0	113	-688	891	49
Surface-water losses from Spokane River between outlet and Post Falls Dam at Post Falls (Wyman, 1993), and seepage from Couer d’Alene Lake to Spokane Valley-Rathdrum Prairie aquifer					7,250	7,250	7,250	7,250	7,250	7,250	7,250
Total inflows					208,085	88,966	237,905	152,727	155,589	158,471	167,110
Total outflows					227,346	94,583	256,294	158,905	155,790	161,082	175,416
Residual (inflows-outflows)					-19,261	-5,617	-18,389	-6,178	-201	-2,611	-8,306
Residual as percentage of inflows					9.3	6.3	7.7	4.0	0.1	1.6	4.9
Residual as percentage of outflows					8.5	5.9	7.2	3.9	0.1	1.6	4.7