DOCSLIB.ORG

Santa Susana Mountains Trails Master Plan-II: Initial Study

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Santa Susana Mountains Trails Master Plan-II: Initial Study SANTA SUSANA MOUNTAINS TRAILS MASTER PLAN – PHASE II INITIAL STUDY / MITIGATED NEGATIVE DECLARATION PREPARED FOR: COUNTY OF LOS ANGELES DEPARTMENT OF PARKS AND RECREATION 510 S. VERMONT AVE. LOS ANGELES, CA 90020 PREPARED BY: SAPPHOS ENVIRONMENTAL, INC. 430 NORTH HALSTEAD STREET PASADENA, CALIFORNIA 91107 NOVEMBER 2, 2017 Table of Contents SECTION PAGE 1. Project Description ........................................................................................................................................ 1-1 1.1 Project Title ....................................................................................................................................... 1-1 1.2 Lead Agency ...................................................................................................................................... 1-1 1.3 Primary Contact Person ................................................................................................................. 1-1 1.4 Project Location ............................................................................................................................... 1-1 1.5 Project Sponsor ................................................................................................................................ 1-2 1.6 General Plan Land Use Designation ............................................................................................. 1-3 1.7 Zoning ................................................................................................................................................ 1-5 1.8 Background and Existing Conditions ............................................................................................ 1-7 1.9 Project Description ........................................................................................................................ 1-13 1.10 Statement of Objectives ................................................................................................................ 1-16 1.11 Construction Scenario ................................................................................................................... 1-17 1.12 Operation and Maintenance ......................................................................................................... 1-20 1.12 Related Projects .............................................................................................................................. 1-21 2. Environmental Checklist and Impact Analysis .......................................................................................... 2-1 2.1 Aesthetics ........................................................................................................................................... 2-5 2.2 Agriculture/Forest ......................................................................................................................... 2-12 2.3 Air Quality ....................................................................................................................................... 2-16 2.4 Biological Resources ...................................................................................................................... 2-20 2.5 Cultural Resources .......................................................................................................................... 2-28 2.6 Energy ............................................................................................................................................. 2-33 2.7 Geology/Soils ................................................................................................................................. 2-35 2.8 Greenhouse Gas Emissions .......................................................................................................... 2-41 2.9 Hazards/Hazardous Materials ...................................................................................................... 2-43 2.10 Hydrology/Water Quality ............................................................................................................. 2-51 2.11 Land Use/Planning ........................................................................................................................ 2-58 2.12 Mineral Resources .......................................................................................................................... 2-61 2.13 Noise ................................................................................................................................................ 2-64 2.14 Population/Housing ...................................................................................................................... 2-68 2.15 Public Services ................................................................................................................................ 2-70 2.16 Recreation ........................................................................................................................................ 2-77 2.17 Transportation/Traffic .................................................................................................................. 2-83 2.18 Tribal Cultural Resources .............................................................................................................. 2-86 2.19 Utilities/Services ............................................................................................................................. 2-89 2.20 Mandatory Findings of Significance ............................................................................................ 2-94 3. Mitigation Measures ....................................................................................................................................... 3-1 4. Report Preparation ......................................................................................................................................... 4-1 5. References ....................................................................................................................................................... 5-1 i-1/3 TABLE PAGE 1.6-1 Project Study Area Land Use Designations ........................................................................................ 1-4 1.7-1 Proposed Project Area Zoning Designations ..................................................................................... 1-6 1.8-1 Los Angeles County Park Service Area Definitions ........................................................................ 1-10 1.8-2 Existing Trails within Project Study Area .......................................................................................... 1-12 1.9-1 County Trail Types ................................................................................................................................ 1-13 1.9-2 Proposed Trail Corridors ..................................................................................................................... 1-14 1.9-3 Proposed Facilities ................................................................................................................................ 1-16 1.11-1 Proposed Trail Corridor NWI Crossings .......................................................................................... 1-18 1.12-1 Trail Maintenance Activity Equipment .............................................................................................. 1-21 1.13-1 List of Related Projects ........................................................................................................................ 1-22 2.2-1 FMMP Important Farmland ................................................................................................................ 2-13 2.9-1 EnviroStor Data .................................................................................................................................... 2-45 2.9-2 Geotracker Data: Permitted Underground Storage Tanks [USTs] ................................................ 2-45 2.9-3 Geotracker Data: Hazardous Sites ...................................................................................................... 2-46 2.13-1 Ambient Noise Levels .......................................................................................................................................... 2-64 2.13-2 Construction Activity Noise Levels at 50 Feet ................................................................................. 2-66 2.13-3 Predicted Distance at Which Noise Impact Would Be below Level of Significance .................. 2-66 2.14-1 Unincorporated Los Angeles County Growth Forecast ................................................................. 2-68 2.16-1 Regional Parkland within Project Study Area ................................................................................... 2-78 2.16-2 Existing Local Parks within Service Areas of Project Study Area ................................................. 2-79 2.16-3 Public Access Open Space within One Mile of Project Study Area .............................................. 2-82 2.19-1 Proposed Trail Related Restroom Facilities ...................................................................................... 2-90 FIGURE FOLLOWS PAGE 1.4-1 Regional Vicinity Map ............................................................................................................................ 1-1 1.4-2 Local Vicinity Map .................................................................................................................................. 1-1 1.4-3 Topographic
Load more

Recommended publications
  • Revised Section 4.6 Biological Resources Draft Environmental
    Revised Section 4.6 Biological Resources Draft Environmental Impact Report SCH No. 2002091081 Prepared for: City of Santa Clarita Department of Planning & Building Services 23920 Valencia Boulevard, Suite 302 Santa Clarita, California 91355 Prepared by: Impact Sciences, Inc. 30343 Canwood Street, Suite 210 Agoura Hills, California 91301 March 2004 Revised Section 4.6 Biological Resources Draft Environmental Impact Report SCH No. 2002091081 Prepared for: City of Santa Clarita Department of Planning & Building Services 23920 Valencia Boulevard, Suite 302 Santa Clarita, California 91355 Prepared by: Impact Sciences, Inc. 30343 Canwood Street, Suite 210 Agoura Hills, California 91301 March 2004 Table of Contents Volume I: Environmental Impact Report Section Page Introduction....................................................................................................................I-1 Executive Summary ......................................................................................................ES-1 1.0 Project Description....................................................................................................... 1.0-1 2.0 Environmental and Regulatory Setting......................................................................... 2.0-1 3.0 Cumulative Impact Analysis Methodology .................................................................. 3.0-1 4.0 Environmental Impact Analyses................................................................................... 4.0-1 4.1 Geotechnical Hazards..........................................................................................
    [Show full text]
  • 4.3 Cultural Resources
    4.3 CULTURAL RESOURCES INTRODUCTION W & S Consultants, (W&S) conducted an archaeological survey of the project site that included an archival record search conducted at the local California Historic Resource Information System (CHRIS) repository at the South Central Coastal Information Center (SCCIC) located on the campus of California State University, Fullerton. In July 2010, a field survey of the 1.2-mile proposed project site was conducted. The archaeological survey report can be found in Appendix 4.3. Mitigation measures are recommended which would reduce potential impacts to unknown archeological resources within the project site, potential impacts to paleontological resources, and the discovery of human remains during construction to less than significant. PROJECT BACKGROUND Ethnographic Setting Tataviam The upper Santa Clara Valley region, including the study area, was inhabited during the ethnographic past by an ethnolinguistic group known as the Tataviam.1 Their language represents a member of the Takic branch of the Uto-Aztecan linguistic family.2 In this sense, it was related to other Takic languages in the Los Angeles County region, such as Gabrielino/Fernandeño (Tongva) of the Los Angeles Basin proper, and Kitanemuk of the Antelope Valley. The Tataviam are thought to have inhabited the upper Santa Clara River drainage from about Piru eastwards to just beyond the Vasquez Rocks/Agua Dulce area; southwards as far as Newhall and the crests of the San Gabriel and Santa Susana Mountains; and northwards to include the middle reaches of Piru Creek, the Liebre Mountains, and the southwesternmost fringe of Antelope Valley.3 Their northern boundary most likely ran along the northern foothills of the Liebre Mountains (i.e., the edge of Antelope Valley), and then crossed to the southern slopes of the Sawmill Mountains and Sierra Pelona, extending 1 NEA, and King, Chester.
    [Show full text]
  • Three Chumash-Style Pictograph Sites in Fernandeño Territory
    THREE CHUMASH-STYLE PICTOGRAPH SITES IN FERNANDEÑO TERRITORY ALBERT KNIGHT SANTA BARBARA MUSEUM OF NATURAL HISTORY There are three significant archaeology sites in the eastern Simi Hills that have an elaborate polychrome pictograph component. Numerous additional small loci of rock art and major midden deposits that are rich in artifacts also characterize these three sites. One of these sites, the “Burro Flats” site, has the most colorful, elaborate, and well-preserved pictographs in the region south of the Santa Clara River and west of the Los Angeles Basin and the San Fernando Valley. Almost all other painted rock art in this region consists of red-only paintings. During the pre-contact era, the eastern Simi Hills/west San Fernando Valley area was inhabited by a mix of Eastern Coastal Chumash and Fernandeño. The style of the paintings at the three sites (CA-VEN-1072, VEN-149, and LAN-357) is clearly the same as that found in Chumash territory. If the quantity and the quality of rock art are good indicators, then it is probable that these three sites were some of the most important ceremonial sites for the region. An examination of these sites has the potential to help us better understand this area of cultural interaction. This article discusses the polychrome rock art at the Burro Flats site (VEN-1072), the Lake Manor site (VEN-148/149), and the Chatsworth site (LAN-357). All three of these sites are located in rock shelters in the eastern Simi Hills. The Simi Hills are mostly located in southeast Ventura County, although the eastern end is in Los Angeles County (Figure 1).
    [Show full text]
  • 16. Watershed Assets Assessment Report
    16. Watershed Assets Assessment Report Jingfen Sheng John P. Wilson Acknowledgements: Financial support for this work was provided by the San Gabriel and Lower Los Angeles Rivers and Mountains Conservancy and the County of Los Angeles, as part of the “Green Visions Plan for 21st Century Southern California” Project. The authors thank Jennifer Wolch for her comments and edits on this report. The authors would also like to thank Frank Simpson for his input on this report. Prepared for: San Gabriel and Lower Los Angeles Rivers and Mountains Conservancy 900 South Fremont Avenue, Alhambra, California 91802-1460 Photography: Cover, left to right: Arroyo Simi within the city of Moorpark (Jaime Sayre/Jingfen Sheng); eastern Calleguas Creek Watershed tributaries, classifi ed by Strahler stream order (Jingfen Sheng); Morris Dam (Jaime Sayre/Jingfen Sheng). All in-text photos are credited to Jaime Sayre/ Jingfen Sheng, with the exceptions of Photo 4.6 (http://www.you-are- here.com/location/la_river.html) and Photo 4.7 (digital-library.csun.edu/ cdm4/browse.php?...). Preferred Citation: Sheng, J. and Wilson, J.P. 2008. The Green Visions Plan for 21st Century Southern California. 16. Watershed Assets Assessment Report. University of Southern California GIS Research Laboratory and Center for Sustainable Cities, Los Angeles, California. This report was printed on recycled paper. The mission of the Green Visions Plan for 21st Century Southern California is to offer a guide to habitat conservation, watershed health and recreational open space for the Los Angeles metropolitan region. The Plan will also provide decision support tools to nurture a living green matrix for southern California.
    [Show full text]
  • Notice of Intent, Notice of Preparation, Scoping Meeting Sign-In
    United States Department of Defense, et al., "Notice of Intent, Notice of Preparation, Scoping Meeting Sign-In Sheet, Scoping Meeting Request to Speak/Written Comment Forms, Scoping Meeting Transcript, and Related Comment Letters" (August 2005) 41380 Federal Register/Vol. 70, No. 137/Tuesday, July 19, 2005/Notices including suggestions for reducing this DEPARTMENT OF DEFENSE FOR FURTHER INFORMATION CONTACT: burden to the General Services Questions about the proposed action Administration, FAR Secretariat (VIR), Department of the Army; Corps of and Draft EIS/EIR can be answered by 1800 F Street, NW, Room 4035, Engineers Dr, Aaron O. Allen, Corps Project Washington, DC 20405. Manager, at (805) 585-2148. Comments Intent To Prepare a Draft shall be addressed to: U.S. Army Corps FOR FURTHER INFORMATION CONTACT: Environmental Impact Statement! of Engineers, Los Angeles District, Jeremy Olson, Contract Policy Division, Environmental Impact Report (DEIS! Ventura Field Office, ATTN: File GSA (202) 501-3221. DEIR) for Proposed Future Permit Number 2003-01264-AOA, 2151 Actions Under Section 404 of the Clean SUPPLEMENTARY INFORMATION: Alessandro Drive, Suite 110, Ventura, Water Act for the Newhall Ranch CA 93001. Alternatively, comments can A. Purpose Specific Plan and Associated Facilities be e-mailed to: Along Portions of the Santa Clara Aaron,O.AIlen@usace,army,mil. Advance payments may be authorized River and Its Side Drainages, and under Federal contracts and Development of a Candidate SUPPLEMENTARY INFORMATION: subcontracts, Advance payments are the Conservation Agreement with 1, Project Site and Background least preferred method of contract Assurances (CCAA) for the San Information, The Newhall Ranch site is financing and require special Fernando Valley Spineflower, in Los located in northern Los Angeles County determinations by the agency head or Angeles County, California, With the and encompasses approximately 12,000 designee.
    [Show full text]
  • Parkland and Open Space Strategy Project List
    OPEN SPACE ACQUISITION IMPLEMENTATION WORK PROGRAM FISCAL YEAR 2019-20 Approved at the Financial Accountability and Audit Panel Meeting: March 19, 2019 Open Space Acquisition Implementation Work Program TABLE OF CONTENTS EXECUTIVE SUMMARY 3 WORK PROGRAM A. Present Challenges 5 B. Types of Undeveloped Land to be Acquired 5 C. Acquisition Principles 6 D. Acreage Allocation Ratio 7 E. Description of Land Acquisition Projects 7 F. Acquisition Work Plan 10 o Potential Open Space o Ranking Process o Applications G. Open Space Evaluation Process 15 o Step-by-Step Instructions Appendix A – Open Space Inventory Criteria (OSIC) Checklist & Definitions Appendix B – Open Space Preservation District Map City of Santa Clarita Page 2 FY 2019-20 Open Space Acquisition Implementation Work Program Open Space Preservation District EXECUTIVE SUMMARY Background Since the City of Santa Clarita’s (City) incorporation in 1987, the City has made a significant effort to preserve greenbelts and undeveloped land within and outside the City. This includes implementing the vision of the first and subsequent City Councils to buffer the Santa Clarita Valley with a greenbelt to help maintain the character and quality of life for residents. During “The Big Picture” Community Strategic Planning process in 2004, several open space goals were reaffirmed. Additionally, in 2007 a number of community members spoke to the Council in support of preserving undeveloped land and asked the Council to, once again, pursue the creation of a mechanism to finance the acquisition and preservation of undeveloped land. In April 2007, the City Council adopted a resolution to initiate the formation of the City of Santa Clarita Open Space Preservation District.
    [Show full text]
  • Top Things to Do in Stevenson Ranch" Located at the Foothills of the Santa Susana Mountains, Stevenson Ranch Is a Very Peaceful Place
    "Top Things To Do in Stevenson Ranch" Located at the foothills of the Santa Susana Mountains, Stevenson Ranch is a very peaceful place. The quietude of the charming houses and environs of the Santa Clarita Valley is awakened by the rumbling roller coasters and happening theme parks nearby. Created by: Cityseeker 10 Locations Bookmarked Six Flags Magic Mountain "A Thrilling Amusement Park" This world famous attraction is one of Southern California's most popular theme parks. With the most exciting thrill rides around, you're guaranteed to have fun. Six Flags California is composed of two parks: Six Flags Magic Mountain and Six Flags Hurricane Harbor. Magic Mountain bills itself as the extreme park with the most roller coasters and adult rides in the by usameredith region. Of course, there's still plenty to do for the whole family, including an amazing kids area that's perfect for the younger crowd. +1 661 255 4100 www.sixflags.com/magicmountain 26101 Magic Mountain Parkway, Valencia CA Vasquez Rocks Natural Area Park "Impressive Rock Formations" Comprising of unique rock formations that began more than 20 million years ago, Vasquez Rocks make an iconic site that has been featured in numerous TV series, movies and documentaries. The site is named after the notorious bandit Tiburcio Vasquez who used these rock formations to hide from the law in 1874. As of today however, the site is sought out for by Rennett+Stowe hiking, picnics and horseback riding. Owing to its prehistoric significance, the site was added to the US National Register of Historic Places in 1972.
    [Show full text]
  • Table of Contents
    This page intentionally left blank Table of Contents 1. Section 1 Introduction ...................................................................................................................... 1-1 1.1 Overview ................................................................................................................... 1-1 1.2 Hazard Mitigation Planning ...................................................................................... 1-1 1.3 Disaster Mitigation Act of 2000 ............................................................................... 1-1 1.4 Community Rating System – Activity 510 Floodplain Management Planning ....... 1-2 1.5 Local Participants ..................................................................................................... 1-2 1.6 Community Profile ................................................................................................... 1-3 1.6.1 Unincorporated Ventura County................................................................... 1-3 1.6.2 Participating Cities ........................................................................................ 1-3 1.6.3 Participating Special Districts ....................................................................... 1-4 1.7 Description of the Multi-Hazard Mitigation Plan ..................................................... 1-6 1.7.1 Section 2: Record of Adoption ..................................................................... 1-6 1.7.2 Section 3: Planning Process .........................................................................
    [Show full text]
  • City of Fillmore, California ADOPTED OPERATING BUDGET FISCAL YEAR 2019-20 CITY of FILLMORE CALIFORNIA
    City of Fillmore, California ADOPTED OPERATING BUDGET FISCAL YEAR 2019-20 CITY OF FILLMORE CALIFORNIA ADOPTED OPERATING BUDGET Fiscal Year 2019-2020 INCORPORATED IN 1914 Cover: City of Fillmore City Hall CITY OF FILLMORE Adopted Operating Budget Fiscal Year 2019-2020 City Council Diane McCall Mark Austin Manuel Minjares Tim Holmgren Lynn Edmonds Executive Management Team David W Rowlands, City Manager Tiffany Israel, City Attorney Gaylynn Brien, Finance Director Keith Gurrola, Fire Chief Eric Tennessen, Police Chief Kevin McSweeney, Planning/Community Development Director Erika Herrera, Human Resources Director/Deputy City Clerk David Smallwood, Public Works Manager Krista Martinez and Sandra Edwards, Parks and Recreation Coordinators A special thanks to all the Citydepartments, whose cooperation and input helped put this document together. i CITY OF FILLMORE Residents Mayor Mayor Pro Tem Council Member Council Member Council Member Diane McCall Tim Holmgren Manuel Minjares Mark Austin Lynn Edmonds - Planning Commission City Manager - Active Adult Commission City Attorney David W Rowlands - Parks Commission Tiffany Israel - Arts Commission - Successor Agency to RDA Human Resources Finance Planning/Development Erika Herrera Gaylynn Brien Kevin McSweeney Public Works Parks and Recreation Public Safety David Smallwood Krista Martinez and Eric Tennessen Sandra Edwards Fire Protection Keith Gurrola ii The Adopted Budget for FY 2018-19 received two awards. The Government Finance Officers Association of the United States and Canada (GFOA) presented a “Distinguished Budget Presentation Award” to the City of Fillmore. To receive this award, a governmental entity must publish a budget document that meets program rating criteria, as a Policy document, operations guide, financial plan, and communications devise.
    [Show full text]
  • Board Agenda and Report Packet
    A Joint Powers Authority BOARD OF DIRECTORS MEETING AGENDA Monday, January 25, 2021 - 1:00 PM NCTC JPA Board Meeting Virtual Zoom Board Meeting Attendee Info: Join from a PC, Mac, iPad, iPhone or Android device: Please click this URL to join. Please click link below to Join Virtual Zoom Board Meeting – https://us02web.zoom.us/j/83120894191?pwd=TmpWVGlqMHRzU0hmWnlYZU1zSDdlZz09 Meeting ID: 831 2089 4191 Passcode: 949130 One tap mobile +16699009128,,83120894191#,,,,*949130# US (San Jose) +13462487799,,83120894191#,,,,*949130# US (Houston) Dial by your location +1 669 900 9128 US (San Jose) +1 346 248 7799 US (Houston) +1 253 215 8782 US (Tacoma) +1 646 558 8656 US (New York) +1 301 715 8592 US (Washington D.C) +1 312 626 6799 US (Chicago) Meeting ID: 831 2089 4191 Passcode: 949130 International numbers available: https://us02web.zoom.us/u/kbRWCbB1Ao North County Transportation Coalition JPA www.northcountytransportationcoalition.org 44933 N. Fern Avenue, c/o City of Lancaster, Lancaster CA 93534 Page 1 of 5 NCTC JPA BOARD OF DIRECTORS BOARD MEMBERS Chair, Supervisor Kathryn Barger, 5th Supervisorial District, County of Los Angeles Mark Pestrella, Director of Public Works, County of Los Angeles Victor Lindenheim, County of Los Angeles Austin Bishop, Council Member, City of Palmdale Laura Bettencourt, Council Member, City of Palmdale Bart Avery, City of Palmdale Marvin Crist, Vice Mayor, City of Lancaster Kenneth Mann, Council Member, City of Lancaster Jason Caudle, City Manager, City of Lancaster Marsha McLean, Council Member, City of Santa Clarita Robert Newman, Director of Public Works, City of Santa Clarita Vacant, City of Santa Clarita EX-OFFICIO BOARD MEMBERS Macy Neshati, Antelope Valley Transit Authority Adrian Aguilar, Santa Clarita Transit BOARD MEMBER ALTERNATES Dave Perry, County of Los Angeles Juan Carrillo, Council Member, City of Palmdale Mike Hennawy, City of Santa Clarita NCTC JPA STAFF Executive Director: Arthur V.
    [Show full text]
  • Geologic Resources Inventory Ancillary Map Information Document for Santa Monica Mountains National Recreation Area
    U.S. Department of the Interior National Park Service Natural Resource Stewardship and Science Directorate Geologic Resources Division Santa Monica Mountains National Recreation Area GRI Ancillary Map Information Document Produced to accompany the Geologic Resources Inventory (GRI) Digital Geologic Data for Santa Monica Mountains National Recreation Area samo_geology.pdf Version: 8/4/2016 I Santa Monica Mountains National Recreation Area Geologic Resources Inventory Ancillary Map Information Document for Santa Monica Mountains National Recreation Area Table of Contents Geolog.i.c. .R...e..s.o..u..r.c..e..s.. .I.n..v.e..n..t.o..r..y. .M...a..p.. .D..o..c..u..m...e..n..t....................................................................... 1 About th..e.. .N...P..S.. .G...e..o..l.o..g..i.c. .R...e..s.o..u..r.c..e..s.. .I.n..v.e..n..t.o..r..y. .P...r.o..g..r.a..m........................................................... 3 GRI Dig.i.t.a..l. .M...a..p..s. .a..n..d.. .S...o..u..r.c..e.. .M..a..p.. .C...i.t.a..t.i.o..n..s........................................................................... 5 Digital G...e..o..l.o..g..i.c.. .M..a..p.. .o..f. .S...a..n..t.a.. .M..o..n..i.c..a.. .M...o..u..n..t.a..i.n..s. .N...a..t.i.o..n..a..l. .R..e..c..r.e..a..t.i.o..n.. .A..r.e..a.......................... 6 Map Un..it. .L..i.s..t................................................................................................................................................................. 6 Map Un..it. .D...e..s..c..r.i.p..t.io..n..s...................................................................................................................................................
    [Show full text]
  • Stormwater Management
    3.3 Stormwater Management 3.3 STORMWATER MANAGEMENT This section of the Technical Background Report describes the background, identifies general drainage patterns, existing and future conditions, and related issues in the planning area. The various sources used in the preparation of this chapter include county and local resources such as Ventura County Public Works Agency Watershed Protection District and City of Simi Valley. 3.3.1 Background The City of Simi Valley is located in the southeastern portion of Ventura County immediately adjacent to Los Angeles County. The developed portions of the City are situated primarily on the valley floor with proposed development extending up to the alluvial fans coming out of canyons. The valley is defined by the Santa Susana Mountains on the north and east and by the Simi Hills on the south. The Santa Susana Mountains separate the Simi Valley from the Santa Clara River Valley and Towns Fillmore and Piru to the north. The Simi Hills separate the valley from the City of Thousand Oaks to the southwest, and Moorpark Sphere of Influence separates the western limit.19 The major drainage course through the valley is the Arroyo Simi. The Arroyo Simi is approximately 11.7 miles in length. This major creek drains from the extreme limits of the watershed in the east and northeast, then westerly through the Las Posas Valley (As Arroyo Las Posas) to the Oxnard Plain (as Calleguas Creek) and the Pacific Ocean. Tributaries to Arroyo Simi from the Santa Susana Mountains on the north are (from west to east), Alamos Canyon, Brea Canyon, North Simi Drain, Dry Canyon, Tapo Canyon, Chivo Canyon, and Las Llajas Canyon.
    [Show full text]