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On November 6 and 7, 2006, Mount Rainier National Parkreceived 18 inches of rain in 36 hours. This presentationsummarizes the extensive flood damage that occurredthroughout the park.Mount Rainier National ParkNovember 2006 Flood DamageUpdated November 16, 2006Mount Rainier National ParkNovember 2006 Flood DamageSunshine Point• The section of dike which protected Sunshine PointCampground was destroyed in the flood. Only a smallsection of the campground remained. The rest is now riverbed.• The Nisqually Road was washed out for 200 yards.• The main power line (serving Longmire and Paradise)was severed where it crossed Sunshine Point.Mount Rainier National ParkNovember 2006 Flood DamageThe Nisqually Road and site of the former Sunshine Point CampgroundMount Rainier National ParkNovember 2006 Flood DamageMost of the campground and adjacent road were washed awayMount Rainier National ParkNovember 2006 Flood DamageWater flowing through the remains of the Sunshine Point CampgroundMount Rainier National ParkNovember 2006 Flood DamageThe broken edge of the Nisqually RoadFormer shorelineMount Rainier National ParkNovember 2006 Flood DamageAn aerial view of the former Sunshine Point CampgroundNew shorelineMount Rainier National ParkNovember 2006 Flood DamageSatellite image of the Sunshine Point Campground, showing new shorelineMount Rainier National ParkNovember 2006 Flood DamageNew and former shoreline at Sunshine Point CampgroundFormer shorelineMount Rainier National ParkNovember 2006 Flood DamageWestside Road• Water crossed the Westside Road at its junction with theNisqually Road. Parts of both roads were washed out.• Part of a lane collapsed near the gate at Dry Creek. Theroadway upstream was significantly damaged.Mount Rainier National ParkNovember 2006 Flood DamageWashout at the beginning of the Westside RoadMount Rainier National ParkNovember 2006 Flood DamageDamage to the Nisqually Road across from the Westside Road junctionMount Rainier National ParkNovember 2006 Flood DamageKautz Creek• Kautz Creek changed its channel a mile above the roadbridge, and is now flowing over and undermining theNisqually Road for a distance of 50 yards.• The Kautz Helibase sustained major erosion damagefrom the redirected water flow.Old Kautz CreekchannelNew channelMount Rainier National ParkNovember 2006 Flood DamageKautz Creek changed its channel a mile above the road bridgeKautz Bridge,1 mile downstreamNNisqually RoadBridgeNew creek channelMount Rainier National ParkNovember 2006 Flood DamageKautz Creek flowing across the road east of the bridgeMount Rainier National ParkNovember 2006 Flood DamageKautz Creek continues to erode the edges of the Nisqually RoadMount Rainier National ParkNovember 2006 Flood DamageThe new creek channel flows through the middle of the Kautz HelibaseMount Rainier National ParkNovember 2006 Flood DamageLongmire• Approximately 200 feet of primary sewer line weredestroyed.• A corner of the Emergency Operations Center wasundercut by the river. Its parking lot was destroyed.• The power lines across the river to the CommunityBuilding were knocked out.• The access road to the Community Building and backgate was eroded down to one lane in several places.• Excessive sediment collected in all system filters betweenLongmire and Paradise. The Edith Creek Basin watersupply at Paradise was filled with rocks and dirt.Mount Rainier National ParkNovember 2006 Flood DamageThe Emergency Operations Center at Longmire, during the floodMount Rainier National ParkNovember 2006 Flood DamageThe Emergency Operations Center after the flood. The parking lot is destroyed.Mount Rainier National ParkNovember 2006 Flood DamageAn aerial view of Longmire and the Nisqually RiverMount Rainier National ParkNovember 2006 Flood DamageThe road to the Community Building and back gate was washed outMount Rainier National ParkNovember 2006 Flood DamageA new view, and reduced parking, in front of the Community BuildingMount Rainier National ParkNovember 2006 Flood DamageThe road to the back gate is no longer one lane, but caution is still advisedMount Rainier National ParkNovember 2006 Flood DamageNisqually to Paradise Road• The Nisqually Road was reduced to one lane at milepost5. The embankment is undercut and needs to be rebuilt.• The embankment dropped away at milepost 9, leaving asheer road edge and precipitous drop off.• Small landslides deposited debris on the road in severalplaces.Mount Rainier National ParkNovember 2006 Flood DamageLandslide above Glacier Bridge on the Paradise RoadMount Rainier National ParkNovember 2006 Flood DamageStevens Canyon Road• Major slides blocked the road at mileposts 5.5 and 7.• A large slide above the Ohanapecosh Campgrounddamaged the Stevens Canyon Road above it in two places.Mount Rainier National ParkNovember 2006 Flood DamageLandslide below Stevens Ridge in Stevens CanyonMount Rainier National ParkNovember 2006 Flood DamageThe Grove of the Patriarchs• The suspension bridge accessing the Grove was heavilydamaged.• The Grove itself was buried in a thick layer of mud.• The boardwalk trail was displaced and damaged innumerous places.Mount Rainier National ParkNovember 2006 Flood DamageThe damaged suspension bridgeMount Rainier National ParkNovember 2006 Flood DamageThe boardwalk trails have been haphazardly realignedMount Rainier National ParkNovember 2006 Flood DamageThe grove was blanketed in three feet of mudMount Rainier National ParkNovember 2006 Flood DamageOhanapecosh Campground• A 5,000 foot long landslide below Stevens Canyon Roadis visible across the river from C loop. Debris created amajor logjam downstream.• Erosion and falling trees destroyed several campsites anddamaged the road in C loop.• The Ohanapecosh Visitor Center sustained waterdamage from minor flooding.Mount Rainier National ParkNovember 2006 Flood DamageThe landslide stretches 5,000 feet between Stevens Canyon Road and the riverMount Rainier National ParkNovember 2006 Flood DamageThe view from C loop is dramaticMount Rainier National ParkNovember 2006 Flood DamageThe walk-in campsites behind this marker were washed awayPicnic table, for scaleMount Rainier National ParkNovember 2006 Flood DamageAn enormous logjam formed below the Ohanapecosh CampgroundMount Rainier National ParkNovember 2006 Flood DamageDestroyed picnic table at site C-18Highway 123Mount Rainier National ParkNovember 2006 Flood DamageHighway 123• A large washout occurred near Panther Creek,


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UW ESS 230 - Lecture Notes

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