DOGAMI Open-File Report O-11-06, Stream Channels of the Tualatin

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G E O L O G Y F A N O D T N M I E N Open-File Report O-11-06 M E T R

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A L P STATE OF OREGON I Stream Channels of the Tualatin Valley and Lower Willamette River, E

O Stream Channels of the Tualatin Valley and Lower Willamette River,

R DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES

R E S

O Clackamas, Multnomah, Washington, and Yamhill Counties, Oregon VICKI S. MCCONNELL, STATE GEOLOGIST Clackamas, Multnomah, Washington, and Yamhill Counties, Oregon 1937 by Daniel Coe 2011 Oregon Department of Geology and Mineral Industries

A' 123°13'52"W 123°10'0"W 123°5'0"W 123°0'0"W 122°55'0"W 122°50'0"W 122°45'0"W 122°41'37"W

Clatsop Columbia C 45°39'27"N County

o 45°40'0"N County l Map Symbols Inset B u m Map Area b View i a Highway e

W R e s S a u v i e I s l a n d i g Tillamook t v OREGON F e Street County Hood River o r Washington r n Multnomah County County k M County D u Major Bridge lt a n a ir

y om ah State Boundary e C C Clackamas re h R ek an County ne Yamhill g l County Boundary N County W n S t a u M A' a v u s ie d Wasco S Is l l o R County a u Cross Section a Marion g Burlington n h Polk d A County County R r o d d e Washington R e E iv Inset C a s ihan R C t ill e View Inset View Direction t d F NW G et Oregon o m Benton Linn Jefferson G a r l a k u l Lincoln County County County k i D m e a iry Cre W County e e m r k c C C r s s e e s m t k S r d a ar F b a k k Lom SCALE 1:36,000 ar N N P Lane C 0 1 2 Miles County

Bl edso Willamette River e Creek 0 1 2 Kilometers Basin Deschutes County Banks N Marine Dr d 122°40'0"W R Ba k usch o C Cree eda r k ro Cany b on Cr y eek d a k h e

N Lombard St Lombard N Klamath e Douglas OR-6 S e r M Bybee Lak County C c County W W y C Coos N a a r K t County c h y M C re ek

Clark County Smith Lake Multnomah County

NW Sk OR-120 ylin e B lv Colum d bia River 122°35'0"W

North 45°36'24"N W e Plains stF o r k NE D Mar a ine Dr

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R o ck C a re H ek o lc o l m b C r N Lombard St e I e - n Rd 5 k antow a NW Germ US-30BY reek Ab bey C t 45°35'0"N i Colu d US-30BY mbia Slough

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H Multnomah County i N InterstateAve l US-26 o l Washington County D a i r u y Cr e e k n W il lam et O G t k e R e e NW 185thAve t R on Cr - Daws iv a e 9 O r 9 W A R l l Rockcreek a - m 8 a e e d US-26 a R s i d g e Inset C eek i P Cr View onson M r B NE Martin Luther King Jr. Blvd e cK a

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NW Co C u n o cil Cr rn Cedar eek D ell a Rd vd i C l

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r y e NE Cornell R

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e h k E c e N l r C u G Ro ck S a G l e s I-84 US-30 u C n r eek low Creek a Wil l l i v Forest N Hillsboro W Corn Grove Cornelius ell Rd

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tin Riv c a e k u al r Hills T C OR-8 r e OR-47 e k

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O Bea verto Slope 45°30'0"N D n Cr il eek SE Powell Blvd l O US-26 ey Aloha R Cr e -

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SW 185thAve

H OR-213 ag Beaverton g SE Foster Rd L OR-10 a J k o e h n Raleigh Hills st W o

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F k e O t t R e - e SW Murray Blvd 9

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OR-10 C o o p e r Rd M o l l u l i n OR-141 ack Jack C t C l reek H B r a M l e i a n u c g g I te sen Cr v n is i l k n hr e t i C e R n a

r o k n n o m p i w t m a S a s a l a a h C

W W u Metzger o C

S T H o u u n t i n y t T in l y u a lat River O l R - 21 Gaston 7 Ash Cree k Milwaukie I-5

S W k urris Cr e e R B iv e r Rd OR-210

d Tigard R OR-224 ak Pe d o al M un B t Scott H T C r i W r eek ll S yo C n 45°25'0"N re ek C re ek SW Laurel Rd 3 4 - R O Kel logg C Lake reek B u l l M o u n Oswego t a i A n y e rs C OR-219 re e k 45°25'0"N k Oak e e r

C o o Grove

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t F n y ke t a u L n ee go o M Cr k we u c Fee Os C

n n C King o l l C l t i

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a Johnson s Durham

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B a ld h l ek P a re e n a a C k l t k a R ee Jennings r SW Tualatin Rd o C S d ton C OR-141 Rivergrove a Hea g e

w Lodge s dges Creek O l He OR-99W I-205 OR-213 k ee d r R e Chi C y y c k n Tualatin e e l l

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C N d d n E a l N er w Gladstone iv o R R s M Cla ckam a Inset A OR-99W View N I-205 E B o ald Peak R d d u R d d r o ff a C t n e S da r W C S r e t e k West a k Linn e e Abern r ethy Creek C i l l il h n m Sherwood a Y I- 2 s 0 5 Oregon

City O w Creek R llo - Stag Ho 2 1 Yamhill 3

N P o

r e t t h e Ya llam m O s Wi ette hill Riv R

45°20'0"N r - M 2 l R 9E Fa ls 4 o -9 0 ck o R C O OR-47 r u Tuala e tin R e n iver k er t v N i e C R w he C a e hal NE North Valley Rd o tt e em f i e l C f m l NE Bell Rd e n a C re e ll e i r ee B L k a W r 9 k k y e Washington County 1 3 a 2 C - 1 n R r O ee Clackamas County 2 C k - re R e O k 45°20'0"N 45°19'6"N 123°12'54"W 123°10'0"W 123°5'0"W 123°0'0"W 122°55'0"W 122°50'0"W 122°45'0"W 122°40'0"W 122°35'0"W 122°34'5"W A

This map depicts streams of the Tualatin Valley and the Lower Willamette River water and land areas. The color gradient was applied to digital elevation models Software: Esri ArcGIS 10.0, Adobe Creative Suite 5. watershed in northwestern Oregon. The Tualatin Valley is bound to the south by the (DEMs) that were created using 3-foot resolution bare-earth lidar data. Transparent N Projection: North American Datum 1983, Lambert Conformal Conic. Grid ticks displayed in latitude and longitude. Chehalem Mountains, to the north and east by the Tualatin Mountains, and to the shaded relief and shaded slope layers derived from lidar were also draped on top of N Source data: Lidar data from DOGAMI Lidar Data Quadrangles LDQ-2009-45122C5-Oregon City, LDQ-2009-45122C6-Canby, LDQ-2009-45122C7-Sherwood, LDQ-2009-45122C8-Newberg, LDQ-2009-45122D5-Gladstone, LDQ-2009-45122D6-Lake west by the Coast Range. Cities in this region include Portland, Beaverton, Tualatin, the DEMs. First–return lidar data, also known as highest-hit lidar data, were used to Oswego, LDQ-2009-45122D7-Beaverton, LDQ-2009-45122D8-Scholls, LDQ-2009-45122E5-Mount Tabor, LDQ-2009-45122E6- Hillsboro, Tigard, Forest Grove, and Lake Oswego. The eastern part of the valley is create a DEM that was applied to the cities of the region. This technique allows Portland, LDQ-2009-45122E7-Linnton, LDQ-2009-45122E8-Hillsboro, LDQ-2009-45122F6-Vancouver, LDQ-2009-45122F7- Sauvie Island, LDQ-2009-45122F8-Dixie Mountain, LDQ-2009-45123C1-Dundee, LDQ-2009-45123C2-Carlton, LDQ-2009- heavily populated; the western portion maintains a more rural character. All stream viewers to see man-made structures in the areas closest in elevation to the streams 45123D1-Laurelwood, LDQ-2009-45123D2-Gaston, LDQ-2009-45123E1-Forest Grove, LDQ-2009-45123E2-Gales Creek, LDQ- flow in the valley drains to the Tualatin River, which flows eastward from the Coast within city limits. Land that is more than 100 feet above adjacent water surfaces was 2009-45123F1-Meacham Corner, and LDQ-2009-45123F2-Buxton. Highway(2008), road(2008), and city limit(2007) vector data from Oregon Department of Transportation. County vector data from Oregon Geospatial Information Clearinghouse. Stream Range to the Willamette River near Oregon City. partially masked in order to emphasize the areas closer to streams. An elevation data from Environmental Systems Research Institute (Esri). cross section represented by letters and arrows on the map is located below the main Much of the valley is covered by sediments left behind by Pleistocene age floods This product is for informational purposes and may not have been prepared for, or be suitable for legal, engineering, or survey map. This cross section represents both actual and relative elevations and has been purposes. Users of this information should review or consult the primary data and information sources to ascertain the known as the Missoula Floods. Flooding occurred between 15,000 and 12,700 years vertically exaggerated to better visually represent physical features of the landscape. usability of the information. before present (O’Connor and others, 2001). Evidence of the Missoula floods is seen in The lidar data used to create this map were collected from a light aircraft carrying a highly accurate laser scanner. The many places on the map and includes features like Sullivan’s Gulch in Portland, scanner makes over 100,000 measurements each second to build up a three-dimensional “point cloud” model of the surface of the earth and the vegetation and structures on it. A computer sorts the points, separating those that measure the ground from Oswego Lake, and low-lying former channels adjacent to the Willamette River and References: N those that measure other objects such as trees or buildings. Images derived from these sets of points are then merged with Tualatin River (Allison, 1978). In addition, northwest of Sherwood and King City other forms of digital data to create this map. along the Tualatin River corridor there is distinct fluvial scarring where the floods Allison, I. S., 1978, Late Pleistocene sediments and floods in the Willamette Valley: The Oregon Department of Geology and Mineral Industries (DOGAMI) has been collecting lidar data in Oregon since 2006. The goal is to cover the entire state as funding for the data collection becomes available. You can learn more about lidar and view flowed into, and subsequently out of, the valley. Portland, Oreg.: Oregon Department of Geology and Mineral Industries, Ore Bin, v. lidar images of other parts of Oregon at: www.OregonGeology.org 40, no. 12, p. 193-202. To emphasize stream morphology in the Tualatin Valley, a gradient fading from cool Inset A Inset B Inset C blues and greens to warm tans and oranges was applied to the map to represent the O’Connor, J. E., Sarna-Wojcicki, A., Wozniak, K. C., Polette, D. J., and Fleck, R. J., For copies of this publication contact: Looking northwest from above Sherwood and King City. Fluvial scarring from the Looking southeast from above the confluence of the Willamette River and Columbia Looking southeast from above Cornelius. Historical channels of Dairy Creek and the Nature of the Northwest Information Center relative elevation of land in feet above adjacent water surfaces. Dark blue areas of 2001, Origin, extent, and thickness of Quaternary geologic units in the Willamette 800 NE Oregon Street, #28, Ste. 965 the map indicate elevations at or near water surface elevation and thus include both Valley, Oregon: U.S. Geological Survey Professional Paper 1620, 51 p. Missoula Floods is visible along the meandering Tualatin River with Bull Mountain and River. Industrial development in the floodplain on the North Portland peninsula is Tualatin River are shown in this view. Scarring from the Missoula Floods can be seen at Portland, Oregon 97232 Cooper Mountain in the background. shown. The Tualatin Mountains (i.e., the Portland Hills) are in the background. the top of the image where the floodwaters flowed across the landscape. telephone (971) 673-2331 A A' http://www.NatureNW.org