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1321:. The Icicle Strategy also restored the dam infrastructure at Eightmile Lake, permitting higher levels of water storage. Although there were concerns for flooding in and around the areas surrounding the lake and the possibility of damaging trails and vegetation, the positive impacts outweighed the risks; habitat protection, fish passage, fish screening, and water conservation efficiencies.
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244:. It is accessed by a 3.5-mile trail (USFS Trail No. 1552) that starts at USFS Road 7601 as it crosses over Eighmile Creek and makes a turn towards the Stuart and Culchuck Lake Trailhead where the road ends. Self-issued Alpine Lake Wilderness permit required for transit within the Eightmile Lake area.
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climate. The average temperature is 2 °C. The warmest month is August, with an average temperature of 17 °C, and the coldest month is
January, at an average of −10 °C. The average rainfall is 705 millimeters per year. The wettest month is December, with 111 millimeters of rain, and the
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The earthen embankment portion of the dam was restored to reposition from erosion around the north side of the rock-masonry dam which had reduced its capacity of impounding water to the full level for which it was designed and at which it historically operated. Restorations raised the water level to
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consisting of a rock and masonry structure with stop logs and an earthen embankment section that extends from the rock-masonry/concrete structure to the hillside north of the dam. The dam is fitted with a low-level outlet pipeline and a slide gate at the outlet of the lake. Stop logs were first
1281:. The fire expanded into the Stuart Lake and Eightmile drainages burning to the shoreline of Eightmile Lake damaging a large percentage of the lake's watershed. The fire has caused a potential change in runoff into the lake.
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geology. The bedrock is about 3 feet from the surface. There is a large landslide area with boulders and other mass-wasting deposits located at the northeast shore of the lake. The trail to the lake consists of sandy
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placed in a notch in the concrete portion of the dam up to the spillway crest to allow the lake to fill to an elevation of approximately 4,671 feet.
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subbasin region. The plan also managed to improve streamflow and water availability into the subbasin affected by the subsequent
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and increase the water supply available during low flow periods, which typically occur during the late summer.
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which gives the lake a high potential for refill, even during dry years. The reservoir is contained by a small
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Eightmile Lake is managed by the Icicle and
Peshastin Irrigation Districts (IPID) to provide water storage for
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237:. It is a reservoir lake formed along the beginning route of Eightmile Creek as it exits Jack Ridge.
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This infrastructure allows for controlled releases of stored water to supplement flows into
1358:. U.S.G.S. Topographic Division, Office of Research & Technical Standards. p. 127.
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On August 11, 2017 lightning caused by a cold frontal passage that tracked through the
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1546:"Post-Fire BAER Assessment Burned Area Emergency Response (BAER) Information Brief"
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U.S. Geological Survey
Geographic Names Information System: Eightmile Lake
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Eighmile lake sits in a basin consisting of rocky soils and igneous
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1585:"Icicle Creek strategy - Washington State Department of Ecology"
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1442:"Updated world map of the Köppen-Geiger climate classification"
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Geological Survey (U.S.). Branch of
Geographic Names (1981).
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plan to resolve the shortage of water supply that threatened
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The lake is located approximately 10 miles from the city of
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and other wildflowers and a coniferous presence primarily
1609:"Chelan County Natural Resources - Environmental Review"
1519:
Icicle and
Peshastin Irrigation Districts (April 2018).
1521:"Eightmile Lake Storage Restoration Feasibility Study"
1235:. The lake captures water runoff from a 3,800-acre
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1555:. United States Forest Service. Archived from
266:and boulders. Eightmile Lake sits on a highly
8:
1526:. Chelan County Natural Resources Department
1335:List of lakes of the Alpine Lakes Wilderness
291:least in July, with 16 millimeters of rain.
1277:started a fire about 15 miles southwest of
270:and semibarren alpine basin, surrounded by
1325:an elevation of approximately 4,667 feet.
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1419:. Mountaineers Books. 2019. p. 186.
1395:. United States Department of Agriculture
1269:Jack Creek Forest Fire and Eightmile Lake
1487:"NASA Earth Observations Data Set Index"
1317:. In 2018, the plan was approved by the
1204:Average max. and min. temperatures in °F
758:Average max. and min. temperatures in °C
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1319:Washington State Department of Ecology
1295:Washington State Department of Ecology
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16:Reservoir in Washington, United States
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1656:Lakes of the Alpine Lakes Wilderness
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1449:Hydrology and Earth System Sciences
1356:Washington Geographic Names, Book 1
1651:Lakes of Chelan County, Washington
14:
1553:Central Washington Fire Recovery
1309:and non-tribal fisheries in the
1305:, fish habitat and passage, and
225:located on the eastern slope of
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1373:. Washington Trails Association
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1212:Precipitation totals in inches
65:Show map of Washington (state)
1:
103:
95:Show map of the United States
1393:"Eightmile Lake Trail #1552"
212:4,641 ft (1,415 m)
1440:Peel, M C; Finlayson, B L.
1416:Day Hiking Central Cascades
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766:Precipitation totals in mm
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33:Eightmile Lake Mosaic Burn
1462:10.5194/hess-11-1633-2007
204:76.6 acres (31.0 ha)
38:
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1661:Okanogan National Forest
146:47.520306°N 120.865306°W
1279:Leavenworth, Washington
1275:Alpine Lakes Wilderness
242:Leavenworth, Washington
1489:. NASA. Archived from
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151:47.520306; -120.865306
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286:Eightmile lake has a
1613:www.co.chelan.wa.us
1493:on 28 November 2017
784:Imperial conversion
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227:Eightmile Mountain
1315:2017 forest fires
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306:Climate chart (
301:Eightmile Lake
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189: countries
181:Eightmile creek
169:Eightmile creek
164:Primary inflows
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1562:on 2018-05-16
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1455:: 1639–1640.
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137:120°51′55.1″W
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117:United States
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109:Chelan County
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1616:. Retrieved
1612:
1603:
1592:. Retrieved
1588:
1564:. Retrieved
1557:the original
1552:
1540:
1528:. Retrieved
1495:. Retrieved
1491:the original
1466:. Retrieved
1452:
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1415:
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1397:. Retrieved
1387:
1375:. Retrieved
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1349:
1323:
1311:Icicle Creek
1288:
1272:
1249:Icicle Creek
1246:
1230:
285:
256:
239:
218:
217:
201:Water volume
134:47°31′13.1″N
1285:Restoration
308:explanation
149: /
124:Coordinates
1645:Categories
1618:2020-10-17
1594:2020-10-17
1341:References
1303:irrigation
1233:irrigation
288:hemiboreal
235:Washington
113:Washington
1289:In 2016,
1255:2017 fire
268:glaciated
248:Geography
1497:19 March
1468:19 March
1399:11 March
1329:See also
1293:and the
771:Source:
259:tonalite
105:Location
1530:9 March
1377:9 March
282:Climate
278:pines.
272:heather
253:Geology
1566:16 May
1423:
1307:tribal
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276:larch
229:, in
187:Basin
1568:2018
1532:2021
1499:2021
1470:2021
1421:ISBN
1401:2021
1379:2021
1227:Uses
264:loam
223:lake
1457:doi
1241:dam
1177:4.4
1146:3.5
1115:2.7
1084:1.5
1053:0.9
1022:0.6
960:1.2
898:2.9
867:3.3
836:3.7
747:−12
731:111
468:−10
437:−11
406:−11
233:in
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1002:57
976:30
971:46
945:19
940:34
914:14
909:28
883:12
878:21
852:12
847:18
742:−8
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700:90
669:68
649:16
638:39
623:12
618:22
607:23
587:23
576:16
556:14
545:25
530:−1
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685:0
680:7
654:7
592:9
561:3
525:8
494:1
375:D
370:N
365:O
360:S
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350:J
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320:J
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