Flow of the Colorado River and Other Western Boundary Streams and Related Data
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
The Colorado River Imperial Valley Soils
THE COLORADO RIVER and IMPERIAL VALLEY SOILS I I ' ' '' ' ' '"' ' A CHRONICLE OF IMPERIAL VALLEY'S CONTINUING FIGHT AGAINST SALT FOREW ORD Elsewhere In the Untied States, soil conservation dlstricte - lormed as a result of referendum by landowners - are governed by an elected board ol directors. In Imperial Valley, Imperial lrriqatlon Dlatrict functions a.s the SoU Conservation District under a unique memorandum of aqreement with the U.S. Department of Aqr;culture. Soil conservotlon policy Ia ael by the District board which also aerves as a soli conservation board. Soil scl.ontlata. en91n..•r• and con&41rvatlonlsts provide technical assistance to farmers. Soil engineering lnforma1ton and survey da1a, prepared by either the liD or SCS, are freely interchanged. The Dlatrict provides clerical and office facllJUes lor SCS, as well as pub!Jc Information 01818tance. Silt and Salt Imperial Valley, the winter qreenhouse of the nation. has be&n oonqu.,rtng the pro!> !ems and obstacles tha1 have tendad to discourage Ita formers sin~ 1901. In 1900, thta was a bo11en deMrl. Wllh the construction ol a heading on the Colorado River, 60 mllos east ol the Valley, irrigation wa1er was brought lnto the thirsty d·-rt In 1901. This au~sful dlv"r slon ol water through o con ...... ~«-..l••·•t "' * or· VIIYOnc:e canol, many miles of which were In Mexico, was enJoyed (or the brief period of only four years before trouble developed. Looldnf eouth.. thl• oeriol •lew .atowa the beodworb of tl:•• AJI. A flood on the Colorado River washed out the control wor;ca Amenccm Cc:ma.L Tb• Colorado IU•tr ia ot left. -
Shrimp Fishing in Mexico
235 Shrimp fishing in Mexico Based on the work of D. Aguilar and J. Grande-Vidal AN OVERVIEW Mexico has coastlines of 8 475 km along the Pacific and 3 294 km along the Atlantic Oceans. Shrimp fishing in Mexico takes place in the Pacific, Gulf of Mexico and Caribbean, both by artisanal and industrial fleets. A large number of small fishing vessels use many types of gear to catch shrimp. The larger offshore shrimp vessels, numbering about 2 212, trawl using either two nets (Pacific side) or four nets (Atlantic). In 2003, shrimp production in Mexico of 123 905 tonnes came from three sources: 21.26 percent from artisanal fisheries, 28.41 percent from industrial fisheries and 50.33 percent from aquaculture activities. Shrimp is the most important fishery commodity produced in Mexico in terms of value, exports and employment. Catches of Mexican Pacific shrimp appear to have reached their maximum. There is general recognition that overcapacity is a problem in the various shrimp fleets. DEVELOPMENT AND STRUCTURE Although trawling for shrimp started in the late 1920s, shrimp has been captured in inshore areas since pre-Columbian times. Magallón-Barajas (1987) describes the lagoon shrimp fishery, developed in the pre-Hispanic era by natives of the southeastern Gulf of California, which used barriers built with mangrove sticks across the channels and mouths of estuaries and lagoons. The National Fisheries Institute (INP, 2000) and Magallón-Barajas (1987) reviewed the history of shrimp fishing on the Pacific coast of Mexico. It began in 1921 at Guaymas with two United States boats. -
Cultural Landscape Planning: the Mexicali Valley, Mexico
The Sustainable City VII, Vol. 1 457 Cultural landscape planning: the Mexicali Valley, Mexico R. I. Rojas-Caldelas1, C. A. Pena-Salmon1 & J. Ley-Garcia2 1Faculty of Architecture and Design, Autonomous University of Baja California, Mexicali, México 2Institute of Research in Social Sciences, Autonomous University of Baja California, Mexicali, México Abstract Initiating around the eighties, the academic training of landscape architects in Mexico is quite recent compared with the tradition in Europe and the U.S. Also new, is the development of landscape research conducted mainly by geographers, urban planners and other professionals trained in natural sciences, whose work is primarily oriented to land use management for urban development and conservation of natural resources or cultural heritage purposes. However, the issue of the cultural landscape in Mexico has been little explored and lacks any integrated and multidisciplinary methodology to bring together social, cultural and natural processes for study. Therefore, this work focuses on the presentation of an appropriate methodology to address the issue of the evolving cultural landscape of the Valley of Mexicali. This work has been developed into three stages: characterization, multiple assessment of landscape and integration of strategies for their management. Thus progress will be presented for the characterization of physical units, landscape components through pictures, visual and spatial patterns of landscape that structure the region and its settlements. As a partial result it was found that multi-valued zones visually and spatially exist in the Mexicali Valley, as well as activities that give character and differentiate it from other agricultural areas of Baja California. Keywords: cultural landscape, landscape assessment methodologies, visual and spatial assessment, sustainable landscape planning. -
Latin American Biogems: the Baker River Snakes Through Chilean Patagonia from the Glacial Lakes of the Andes to Fjords on the Pacific Coast
Facts Foott, 2009, The Patagonian Foundation and iLCP and Foundation Patagonian The 2009, Foott, The Baker River snakes through Chilean Patagonia from the glacial lakes of the Andes to fjords on the Pacific coast. Latin American BioGems: Saving Special Wild Places and Wildlife NRDC’s BioGems Initiative protects endangered wild regions and species throughout the Americas. In Latin America, NRDC has worked to preserve BioGems unspoiled ecosystems and threatened wildlife from Mexico’s Baja Peninsula to Chile’s Patagonia, working in partnership with communities and organizations to eliminate threats and to find environmentally sustainable alternatives. For more information, please contact: Baja California, n Cabo Pulmo: Cabo Pulmo National Marine Amanda Maxwell Mexico Park is home to the healthiest and most [email protected] To the east of the important coral reef of the Baja Peninsula, (202) 289-2368 Baja Peninsula, the home to humpback whales, dolphins, whale Gulf of California, sharks, Pacific manta rays and five species of sea Carolina Herrera which Jacques turtles, as well as more than 200 species of fish. [email protected] Cousteau called Hopkins Lee Ralph Now a Spanish real estate company is proposing (202) 289-2381 Humpback whale “the aquarium of a massive 9,500 acre resort complex next to the world,” provides shelter for hundreds of species the park. Since October 2010, NRDC has of fish, sea turtles and marine mammals. NRDC been working with a local coalition to stop this is working with Mexican partners to protect Baja’s industrial tourism development and to promote fragile marine life from a variety sustainable tourism alternatives. -
Why Did the Southern Gulf of California Rupture So Rapidly?—Oblique Divergence Across Hot, Weak Lithosphere Along a Tectonically Active Margin
Why did the Southern Gulf of California rupture so rapidly?—Oblique divergence across hot, weak lithosphere along a tectonically active margin breakup, is mainly dependent on the thermal structure, crust- Paul J. Umhoefer, Geology Program, School of Earth Sciences & Environmental Sustainability, Northern Arizona University, al thickness, and crustal strength of the lithosphere when Flagstaff, Arizona 86011, USA; [email protected] rifting begins (e.g., Buck, 2007), as well as forces at the base of the lithosphere and far-field plate interactions (Ziegler and Cloetingh, 2004). ABSTRACT Continental rupture at its two extremes creates either large Rifts in the interior of continents that evolve to form large ocean basins or small and narrow marginal seas depending oceans typically last for 30 to 80 m.y. and longer before com- largely on the tectonic setting of the rift. Rupture of a conti- plete rupture of the continent and onset of sea-floor spreading. nent that creates large oceans most commonly initiates as A distinct style of rifts form along the active tectonic margins of rifts in old, cold continental lithosphere or within former continents, and these rifts more commonly form marginal seas large collisional belts in the interior of large continents, part and terranes or continental blocks or slivers that are ruptured of the process known as the Wilson Cycle (Wilson, 1966). away from their home continent. The Gulf of California and the Rupture to create narrow marginal seas commonly occurs in Baja California microplate make up one of the best examples active continental margins and results in the formation of of the latter setting and processes. -
Tijuana River Valley Existing Conditions Report
Climate Understanding & Resilience in the River Valley Tijuana River Valley Existing Conditions Report Prepared by the Tijuana River National Estuarine Research Reserve for the CURRV project’s Stakeholder Working Group Updated April 14, 2014 This project is funded by a grant from the Coastal and Ocean Climate Applications Program of the National Oceanic and Atmospheric Administration (NOAA) Climate Program Office. Also, supported in part by a grant from the National Estuarine Research Reserve System (NERRS) Science Collaborative. 1 Table of Contents Acronyms ................................................................................................................................................... 3 Figures ....................................................................................................................................................... 4 Introduction ................................................................................................................................................... 5 Resources and Geography ........................................................................................................................... 6 Climate ................................................................................................................................................... 6 Topography & Floodplain ....................................................................................................................... 6 Hydrology .............................................................................................................................................. -
Cultural Resource Inventory for the Vega SES LLC Solar Additional 80-Acres Project, Imperial County, California
Cultural Resource Inventory for the Vega SES LLC Solar Additional 80-Acres Project, Imperial County, California Prepared for: Vega SES, LLC 750 W. Main Street El Centro, California 92243 Prepared by: Joel Lennen, M.A., RPA ASM Affiliates, Inc. 2034 Corte del Nogal Carlsbad, California 92011 USGS 7.5-minute Mount Signal; approximately 80 acres Keywords: Imperial County, Mount Signal USGS 7.5’ Quad, West Mesa, West Side Main Canal, Fern Canal, Fig Drain, Wormwood Canal and Drain, Drew Road, PN 27970 December 2017 Table of Contents TABLE OF CONTENTS Chapter Page MANAGEMENT SUMMARY ................................................................................ iii 1. INTRODUCTION ............................................................................................. 1 PROJECT DESCRIPTION AND LOCATION .................................................................. 1 STUDY PERSONNEL .................................................................................................... 1 2. SETTING ......................................................................................................... 6 NATURAL SETTING ...................................................................................................... 6 Geology and Soils ...................................................................................................... 6 Climate ...................................................................................................................... 6 Topography .............................................................................................................. -
Etched Magazine, January 2015 Issue
MAGAZINE ([SHULHQFH7KH6RXWKZHVWFRP OUTDOOR Finding Common Ground 2015 PRESERVATION &2//$%25$7,21RECREATION $3.95 U.S. #theevolutionofelan Finding Common Ground PRESERVATION&2//$%25$7,21 RECREATION contents options art lovers a conversation with greg istock 18 creating art, music, and life in abstracts the art of interior design 22 artisans who bring function and style to life the allure of watercolor 26 an historical perspective through the eyes (and brush) of roland lee soul searchers the dark night of the soul 30 a space in time where new life begins let’s try some civility 32 the longing for meaningful (and civil) conversation adventure in wellness 34 a “dream” vacation that truly benefits mind, body, and soul adventure seekers the day we set the colorado river free 41 a grand experiment in ecological restoration boots and burgers 50 a deliciously novel hiking and dining guide concrete to canyons 58 when inner city students step foot into zion desert dwellers building ice age park 62 a prehistoric venture takes shape in urban style story keepers 66 expectations historic structures: in every issue the mouthpiece of history the green that turned golden 70 etched in time 8 the 50th anniversary of leaving their mark 10 dixie red hills golf course #theevolutionofelan 12 experiencethesouthwest.com 13 saving an oasis 74 meditations 14 the collaboration of preservation snapshots 92 and recreation in southern utah culture creators the hills are alive 80 a journey through the years of making music on our cover community arts and Writer, Rowan Jacobsen events information 84 Photography By: Fred Phillips the people, the places, the dates, the vibe...the culture of southern utah leaving their mark FINDING COMMON GROUND EXPERIENCE volume 9 – issue 1 ENJOY THE OUTDOOR ISSUE AWARENESS EDUCATE 2015 PRESERVE Darci Hansen Founder Editor in Chief │ │ Laurie James Design Editor ROWAN JACOBSEN writes about place and how it shapes ecosystems, │ │ cultures, cuisines, and us. -
The Lining of the All-American Canal
The Lining of the All American Canal: Effects on Mexico Construction of the All-American Canal, 1935 (top), 1939 (bottom), José Luis Castro-Ruiz and Vicente Sánchez- and 1936 (background). Courtesy of Munguía – El Colegio de la Frontera Norte U.S. Bureau of Reclamation. n 1988, the U.S. Congress approved 7.3 million acre-feet (maf) annually in Law 100-675, authorizing the equal parts, creating high expectations for Secretary of the Interior to line the the economic transformation of the region. All-American Canal (AAC) along a I The Alamo Canal experienced a number 23-mile section in the southern Imperial Valley of California. Lining the canal was of difficulties in the years that followed. expected to save an estimated 70,000 acre- An inability to control canal volumes from feet of water per year lost to seepage the Colorado River resulted in a series where the canal traverses sand dunes. The of floods from 1905 to 1907, affecting Mexican government quickly filed an the cities of Mexicali and Calexico and informal complaint through the Mexican agricultural areas on both sides of the section of the International Boundary and border, and creating the Salton Sea. These Water Commission (IBWC), claiming conditions, together with the dependence potential harm to water users in the of the canal operation on Mexican Most evident is a potential decrease in Mexicali Valley, and noting that the United policy changes, moved Imperial Valley static levels of the Mexicali Aquifer, States was legally obligated by Minute 242 users to lobby for their own access to which depends mostly on AAC seepage to notify Mexico of any changes affecting the Colorado. -
THE L\IIEXICALI VALLEY \VATER PROBLEM . Jol-IN C
THE l\IIEXICALI VALLEY \VATER PROBLEM . JOl-IN c. ARCHBOLD San Diego City Schools The Mexicali Valley of Baja California has become a prime producer of cotton and one of the world's great processors of raw cotton. General argiculture has flourished, too. Like a phoenix arisen from the desert this region has been reclaimed from the arid conditions that have gripped the entire area since before the white man arrived. Now, salinity left in the soil by draining irrigation waters threatens to wipe out the progress of half a century. Only salt-tolerant cotton may survive conditions which have become an international issue. North of the border in the summer of 1961 the U.S. Bureau of Reclamation completed the vVellton-Mohawk Irrigation and Drainage District project. The $14,000,000 drainage system includes 70 deep drain age wells with pumps, and a 50-mile concrete-lined conveyance channel with an outfall on the Gila River above Yuma, Arizona (Figure 1). Drainage water being pumped in the Wellton-Mohawk system is not return Bow in the usual sense of the word, but water accumulated over a long period of tirrie as a result of interior drainage. From before the turn of the century until 1952, Wellton-Mohawk farmers depended upon underground flow of the Gila River for irrigation water.1 The quality of this water was uniformly so poor that it was disclosed in testimony before the United States Senate in 1945 that the irrigated area was down to 8,000 acres (as of 1943; later, even less was in crops) and that samples were taken showing a salt content of 12,000 parts per million.2 In 1952, Colorado River water became available with the completion of the Gila Project. -
Campo Wind Cultural Report
APPENDIX I Cultural Resources Report CULTURAL RESOURCES INVENTORY AND EVALUATION REPORT IN SUPPORT OF SECTION 106 OF THE NHPA for the CAMPO WIND PROJECT WITH BOULDER BRUSH FACILITIES Reviewing Agency: Bureau of Indian Affairs Pacific Region 2800 Cottage Way Sacramento, California 95825 Contact: Dan Hall Prepared by: 605 Third Street Encinitas, California 92024 Brad Comeau, MSc, RPA, Angela Pham, MA, RPA, Micah Hale, PhD, RPA and Rachel Hoerman, PhD, MAY 2019 Printed on 30% post-consumer recycled material. Cultural Resources Inventory and Evaluation Report for the Campo Wind Project with Boulder Brush Facilities NATIONAL ARCHAEOLOGICAL DATABASE (NADB) INFORMATION Authors: Brad Comeau, MSc, RPA; Angela Pham, MA, RPA; Micah J. Hale, PhD, RPA and Rachel Hoerman, PhD Firm: Dudek Project Proponent: Terra-Gen Development Company LLC 11512 El Camino Real, Suite 100 San Diego, California 92130 Report Date: April 2019 Report Title: Cultural Resources Inventory and Evaluation Report for the Campo Wind Project with Boulder Brush Facilities, San Diego County, California Type of Study: Phase I Archaeological Survey; Phase II Archaeological Evaluation New Sites: CWA-S-001, CWA-S-004, CWA-S-005, CWS-S-006, CWS-S-007, CWS-S- 008, CWS-S-009, CWS-S-010, CWS-S-011, CWS-S-012; ECWEP-I-015, ECWEP-SW-001, ECWEP-SW-003, ECWEP-SW-005, ECWEP-SW-006, ECWEP-SW-007, ECWEP-SW-009, ECWEP-SW-011, ECWEP-SW-017, TW-S-001, TW-S-002, TW-S-003, TW-S-007,TW-S-008, TW-S-009, TW-S- 010, TW-S-011, TW-S-012, TW-S-013, TW-S-014, TW-S-015, TW-S-016, TW-S-017, TW-S-030, TW-S-031, -
Description of Source Water System
CHAPTER 2 DESCRIPTION OF THE SOURCE WATER SYSTEM 2.0 Description of the Source Water System During the last 100 years, the CSD’s water system has evolved into a very complex system. It is now estimated to serve a population of 1.4 million people spread out over 370 square miles (Table 2.1). The CSD treats imported raw water and local runoff water at three City WTPs which have a combined capacity of 378 MGD. The CSD treats water by conventional technologies using coagulation, flocculation, sedimentation, filtration and disinfection. Recently, all CSD water treatment plants have been modified to provide for the addition of fluoride to the potable water supply. To ensure safe and palatable water quality, the CSD collects water samples at its reservoirs, WTPs, and throughout the treated water storage and distribution system. The CSD’s use of local and imported water to meet water demand is affected by availability, cost, and water resource management policies. Imported water availability decreases the need to carry over local water for dry years in City reservoirs. CSD policy is to use local water first to reduce imported water purchases; this policy runs the risk of increased dependence on imported water during local droughts. Table 2.1 - City of San Diego General Statistics Population (2010) 1,301,621 Population (Estimated 2014) 1,381,069 Population percent change 6.1 Land Area Square Miles 370 Population Density per Square Mile 3733 Water Distribution Area Square Miles 403 Number of Service Connections (2015) 279,102 2.1 Water Sources (Figure 2.1) Most of California's water development has been dictated by the multi-year wet/dry weather cycles.