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29 Dams in the Federal Columbia River Power System by Reed Burkholder, 1993

		Capacity (Megawatts)	Generation (Megawatt*hours)
1	Grand Coulee	6,684	24,142,843	27.5 %
2	Chief Joseph	2,614	13,564,451	15.5 %
3	John Day	2,484	11,399,725	13.0 %
4	The Dalles	2,074	8,828,172	10.0 %
5	McNary	1,127	7,081,554	8.07 %
6	Bonneville	1,147	5,533,605	6.31 %
7	Libby	620	2,761,475	3.15 %
8	Lower Granite	932	2,227,439	2.54 %
9	Little Goose	932	2,133,690	2.43 %
10	Dworshak	445	1,995,606	2.27 %
11	Ice Harbor	693	1,960,114	2.23 %
12	Lower Monumental	932	1,880,183	2.14 %
13	Hungry Horse	328	1,458,932	1.66 %
14	Palisades	131	479,291	0.54 %
15	Lookout Point	138	327,983	0.37 %
16	Detroit	115	372,144	0.42 %
17	Lost Creek	56	258,864	0.29 %
18	Green Peter	92	241,493	0.28 %
19	Albeni Falls	50	200,665	0.23 %
20	Hills Creek	35	157,783	0.18 %
21	Cougar	29	148,620	0.17 %
22	Foster	23	98,566	0.11 %
23	Big Cliff	21	92,992	0.11 %
24	Anderson Ranch	40	92,468	0.10 %
25	Dexter	17	73,945	0.08 %
26	Minidoka	16	62,689	0.07 %
27	Roza	13	61,886	0.07 %
28	Black Canyon	10	54,150	0.06 %
29	Chandler	13	38,300	0.04 %
Total FCRPS Hydro-Power			87,729,249

In 1991, the four lower Snake River dams (Lower Granite, Little Goose, Lower Monumental and Ice Harbor) together produced 8,201,426 Megawatt*hours or about 9.35% of the total FCRPS hydropower production.

Bold items are dams that obstruct the migration corridor of Idaho's anadromous fish.

Note: The FCRPS was comprised of 30 dams several years ago when Reed Burkholder printed that list (which only lists 29 dams). Diversion Dam on the Boise River was the 30th dam but its generating facility used more electricity than it generated so BPA shut it down. Several years later BPA started referring to 29 dams in the Federal Columbia River Power System.

Source: Bonneville Power Administration, "Generation Received by BPA MWH (M21) Calendar Year 1991"