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Before the FERC Application for New License for the Annex Creek ...

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E-4<br />

1.2.3 Topography, Vegetation, and Wetlands<br />

The <strong>Annex</strong> <strong>Creek</strong> Component 1 s located in steep terra in and has a<br />

watershed characterized primarily by exposed bedrock and alpine tundra vegetation.<br />

The downstream portion of <strong>Annex</strong> <strong>Creek</strong> flows through <strong>for</strong>ested land<br />

dominated by western hemlock and Sitka spruce.<br />

The <strong>Annex</strong> <strong>Creek</strong> dra i nage bas in above <strong>the</strong> <strong>Annex</strong> <strong>Creek</strong> Dam encompasses<br />

6.15 square miles. The basin ranges in elevation from sea level to<br />

4170 feet at <strong>Annex</strong> Peak. The <strong>Annex</strong> <strong>Creek</strong>. Dam is located on <strong>the</strong> sou<strong>the</strong>ast end<br />

of Upper <strong>Annex</strong> Lake Reservoi r. <strong>Annex</strong> <strong>Creek</strong> flows sou<strong>the</strong>ast from <strong>the</strong> upper<br />

lake outlet at E1 820 Mean Sea Level (MSl) to Lower <strong>Annex</strong> Lake at El 620 MSL.<br />

<strong>Annex</strong> <strong>Creek</strong> <strong>the</strong>n cascades steeply <strong>for</strong> a distance of approximately 0.5 mile<br />

from <strong>the</strong> outlet of Lower <strong>Annex</strong> Lake to Taku Inlet at sea level.<br />

The power plant and swi tchyard are located on Taku Inlet approximately<br />

0.5 mile nor<strong>the</strong>ast of <strong>the</strong> mouth of <strong>Annex</strong> <strong>Creek</strong>. The transmission<br />

lines from <strong>the</strong> <strong>Annex</strong> <strong>Creek</strong> Powerhouse follow <strong>the</strong> sou<strong>the</strong>ast shore of Taku Inlet<br />

through a <strong>for</strong>ested area, <strong>the</strong>n extend northwest up llOunta i nous ri dges, past<br />

Power1ine Ridge, into Thane, covering a total distance of 12 miles. The<br />

precipitous slopes are sparsely vegetated; no wetlands have been identified<br />

within or near <strong>the</strong> Project site, o<strong>the</strong>r than <strong>the</strong> lacustrine habitat of <strong>the</strong><br />

streambed itself.<br />

1.2.4 Land Development<br />

The <strong>Annex</strong> <strong>Creek</strong> Project is located in <strong>the</strong> Tongass National Forest<br />

under <strong>the</strong> jurisdiction of <strong>the</strong> USFS. The Project site is located in a remote<br />

area and can only be reached from Juneau by air or via a 22-mile boat trip up<br />

Taku Inlet to <strong>the</strong> powerhouse, and <strong>the</strong>n on foot along <strong>the</strong> penstock to Upper<br />

<strong>Annex</strong> Lake. Fl yi ng condi ti ons to reach Upper <strong>Annex</strong> lake Reservoi r are often<br />

highly hazardous. Existing land development in this area is related to AELP's<br />

hydroelectric project. No o<strong>the</strong>r existing development occurs in or near <strong>the</strong><br />

vicinity of <strong>the</strong> Project boundary_<br />

1.2.5 Population<br />

The only permanent residents 1n <strong>the</strong> viCinity of <strong>the</strong> facility at<br />

<strong>Annex</strong> <strong>Creek</strong> are AELP employees. The nearest popu1ation center is downtown<br />

Juneau, whose population is described below (Section 1.3.5).<br />

1.3 SALMON CREEK COMPONENT<br />

1.3.1 Existing Project Features<br />

The Salmon <strong>Creek</strong> facility (6.7 MW; 10,500 kVA) consists of a<br />

l70-foot-high concrete arch dam that <strong>for</strong>ms a reservoir with a storage capacity<br />

of 12,000 acre-feet at <strong>the</strong> currently allowed maxinn. elevation of 1140 feet.<br />

The water surface is maintained at this level, as required by <strong>the</strong> current

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