466:, which follows the river from there to Timothy Lake. Oak Grove Fork then flows between the Clackamas Lake Campground and Clackamas Lake, which lies to the left of the river, before entering Timothy Lake about 17 miles (27 km) from the mouth. From here to Ripplebrook, Forest Road 57 follows the river. Campgrounds on the lake shore to the left include Oak Fork, Gone Creek, Hood View, and Pine Point. Meditation Point Campground lies on the opposite shore. While flowing through Timothy Lake, the elevation of which is 3,227 feet (984 m) above sea level, Oak Grove Fork receives Crater Creek, Cooper Creek, and Dinger Creek, all from the right. The river exits the lake via a
474:
reaching the USGS gauge above Lake
Harriet. Lake Harriet Campground lies along the shore to the right. Flowing through the lake, the river receives Kelley Creek from the left, then exits the lake and receives Sam Creek from the left about 6 miles (9.7 km) from the mouth. Then the river receives Skunk Creek and Canyon Creek from the right, Butte Creek from the left, and Station Creek and Pint Creek, both from the right, before passing Ripplebrook, Ripplebrook Campground, the Ripplebrook Ranger Station and Heliport, and the southeastern terminus of
33:
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of 54.4 square miles (140.9 km). The maximum flow recorded there was 2,110 cubic feet per second (60 m/s) on
December 24, 1964, and the minimum flow was 3.7 cubic feet per second (0.10 m/s) on September 23, 1968. At the power plant gauge, the average flow is 486 cubic feet per second
547:
As part of its efforts to generate electricity from water power in the
Clackamas River basin, PGE built a dam on the Oak Grove Fork in 1923. The company's power plant at Lake Harriet, created by the dam, began making electricity in 1924. To regulate flows on the Oak Grove Fork and on the mainstem
473:
Just 0.3 miles (0.48 km) below the spillway, the river passes the USGS gauge station at
Timothy Lake, then receives Anvil Creek from the right, Stone Creek from the left, Buck Creek from the right, Peavine Creek from the left, and Shellrock Creek and Cat Creek, both from the right, before
499:(13.8 m/s) from a drainage basin of 124 square miles (320 km). The maximum flow recorded there was 5,000 cubic feet per second (140 m/s) on January 7, 1923, and the minimum flow was 128 cubic feet per second (3.6 m/s) on August 16, 2004.
455:. Originating on the Warm Springs Indian Reservation, the river flows generally west about 21 miles (34 km) through the Mount Hood National Forest to the unincorporated community of Ripplebrook, where it joins the main stem of the Clackamas River.
478:, which all lie to the right. Shortly thereafter, the river flows by Rainbow Campground, which lies to the left, and enters the Clackamas River about 53 miles (85 km) above its confluence with the Willamette River at Gladstone.
548:
Clackamas River, the company built a dam at
Timothy Meadows, upstream of Harriet Lake, in 1956. The new dam formed Timothy Lake, a 1,440-acre (580 ha) impoundment that doubles as a recreation site.
414:
494:(PGE) power plant intake, 6.7 miles (10.8 km) from the mouth. The average flow of the river at the Timothy Lake gauge is 133 cubic feet per second (3.8 m/s). This is from a
407:
and falls 2,357 feet (718 m) between source and mouth to an elevation of 1,362 feet (415 m). The main stem begins in the
Cascade Range near Abbot Pass, a mountain
794:
539:) close to Harriet Lake. All species respond well to flies or artificial baits. Only artificial lures and flies allowed on the Oak Grove Fork, with barbless hooks.
32:
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monitors the flow of Oak Grove Fork at two stations, one below
Timothy Lake, 15.5 miles (24.9 km) from the mouth, and the other above a
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795:"Salmon and Steelhead Runs and Related Events of the Clackamas River Basin: A Historical Perspective"
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The Oak Grove Fork
Clackamas River arises at an elevation of 3,719 feet (1,134 m) above
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known as Big
Meadows before leaving the reservation. Shortly thereafter, it crosses the
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718:"Water-data report 2012: 14209000 Oak Grove Fork above Powerplant Intake, OR"
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383:. Here it enters the main stem of the Clackamas River. Oak Grove Fork feeds
769:"Water-data report 2013: 14208700 Oak Grove Fork near Government Camp, OR"
613:. Portland, Oregon: Oregon Historical Society Press. pp. 713, 1008.
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upstream of hydroelectric dam intake, 6.7 miles (10.8 km) from mouth
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From its source, the river flows about 2 miles (3.2 km) through a
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47:
Location of the mouth of the Oak Grove Fork
Clackamas River in Oregon
689:"Online Topographic Maps from the United States Geological Survey"
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660:(Map) (1991 ed.). DeLorme Mapping. § 61–62.
63:, towards which the river generally leads, going upstream
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609:McArthur, Lewis A.; McArthur, Lewis L. (2003).
59:For Oak Grove, an early name for Wapinitia in
451:, on the border between Clackamas County and
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611:Oregon Geographic Names, Seventh Edition
749:. United States Geological Survey. 1980
590:. United States Geological Survey. 1980
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338:5,000 cu ft/s (140 m/s)
18:
640:search using GNIS source coordinates.
318:486 cu ft/s (13.8 m/s)
7:
328:128 cu ft/s (3.6 m/s)
747:Geographic Names Information System
588:Geographic Names Information System
507:The Oak Grove Fork has fishing for
379:to the unincorporated community of
842:Rivers of Clackamas County, Oregon
14:
774:. United States Geological Survey
723:. United States Geological Survey
286:124 sq mi (320 km)
584:"Oak Grove Fork Clackamas River"
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488:United States Geological Survey
361:Warm Springs Indian Reservation
636:Source elevation derived from
349:Oak Grove Fork Clackamas River
227: • coordinates
141: • coordinates
22:Oak Grove Fork Clackamas River
16:River in Oregon, United States
1:
822:Clackamas River Basin Council
359:. From its headwaters in the
103:Physical characteristics
658:Oregon Atlas & Gazetteer
266: • elevation
184:3,719 ft (1,134 m)
180: • elevation
800:. Portland General Electric
529:Oncorhynchus mykiss irideus
521:Oncorhynchus clarki clarkii
304: • location
206: • location
121: • location
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373:Mount Hood National Forest
334: • maximum
324: • minimum
314: • average
270:1,362 ft (415 m)
492:Portland General Electric
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793:Taylor, Barbara (1999).
558:List of rivers of Oregon
517:coastal cutthroat trout
278:21 mi (34 km)
431:45.13056°N 121.70500°W
249:45.07444°N 122.05222°W
163:45.11972°N 121.68528°W
513:Salvelinus fontinalis
355:in the U.S. state of
531:) further down, and
436:45.13056; -121.70500
254:45.07444; -122.05222
168:45.11972; -121.68528
464:Pacific Crest Trail
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804:February 12,
802:. Retrieved
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778:February 12,
776:. Retrieved
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751:. Retrieved
746:
743:"Abbot Pass"
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727:February 12,
725:. Retrieved
693:. Retrieved
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638:Google Earth
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592:. Retrieved
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537:Salmo trutta
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453:Wasco County
402:
389:Lake Harriet
385:Timothy Lake
348:
347:
61:Wasco County
753:November 3,
695:November 2,
691:. TopoQuest
594:November 1,
533:Brown trout
509:Brook trout
434: /
421:121°42′18″W
381:Ripplebrook
252: /
240:122°03′08″W
212:Ripplebrook
166: /
154:121°41′07″W
831:Categories
564:References
442:Abbot Pass
440: (
418:45°07′50″N
365:Abbot Pass
283:Basin size
237:45°04′28″N
151:45°07′11″N
482:Discharge
405:sea level
295:Discharge
97:Clackamas
56:Etymology
552:See also
468:spillway
460:landform
395:plants.
68:Location
523:), and
503:Fishing
367:in the
73:Country
664:
617:
399:Course
357:Oregon
298:
275:Length
220:Oregon
134:Oregon
112:Source
93:County
87:Oregon
798:(PDF)
772:(PDF)
721:(PDF)
363:near
210:near
194:Mouth
83:State
806:2014
780:2014
755:2008
729:2014
697:2008
662:ISBN
615:ISBN
596:2008
486:The
411:at
387:and
409:gap
375:in
833::
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705:^
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535:(
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
