Application of Satellite Data to Model Storm Runoff Into Rosamond Dry Lake

Loyola Marymount University | October 15th, 2014

Antelope Valley is situated in Southern California and is bounded by the Tehachapi and the San Gabriel Mountains. It stretches over 2,200 mi2 and encompasses Rosamond Dry

Antelope Valley is situated in Southern California and is bounded by the Tehachapi and the San Gabriel Mountains. It stretches over 2,200 mi2 and encompasses Rosamond Dry Lake and the 1,200 mi2 watershed draining into it. The cities of Lancaster and Palmdale are the two major urban centers that lie in the watershed draining into Rosamond Dry Lake. The lake lies within the vicinity of the Edwards Air Force Base and provides an important site for aviation research and test operations in addition to ecosystem services. Hence, it is necessary to balance the need to remove water from the lake to support Edwards Air Force Base’s aircraft missions and the need to inundate the lake to protect the its surface and the ecosystem it supports. 

Application of synthetic scenarios to address water resource concerns: A management-guided case study from the Upper Colorado River Basin

Climate Services (Elsevier) | December 9th, 2017

Water managers are increasingly interested in better understanding and planning for projected resource impacts from climate change. In this management-guided study, we u

Water managers are increasingly interested in better understanding and planning for projected resource impacts from climate change. In this management-guided study, we use a very large suite of synthetic climate scenarios in a statistical modeling framework to simultaneously evaluate how (1) average temperature and precipitation changes, (2) initial basin conditions, and (3) temporal characteristics of the input climate data influence water year flow in the Upper Colorado River. The results here suggest that existing studies may underestimate the degree of uncertainty in future streamflow, particularly under moderate temperature and precipitation changes. However, we also find that the relative severity of future flow projections within a given climate scenario can be estimated with simple metrics that characterize the input climate data and basin conditions. These results suggest that simple testing, like the analyses presented in this paper, may be helpful in understanding differences between existing studies or in identifying specific conditions for physically based mechanistic modeling. Both options could reduce overall cost and improve the efficiency of conducting climate change impacts studies.

Applied Aquatic Science: A Business Plan for EcoAtlas

San Francisco Estuary Institute (SFEI) | March 7th, 2017

The EcoAtlas suite of tools represents a significant investment of time, energy, thought, scientific testing, technical innovation, and capital from a number of state and

The EcoAtlas suite of tools represents a significant investment of time, energy, thought, scientific testing, technical innovation, and capital from a number of state and federal public agencies, grant programs, and NGOs over the course of its 17-year existence. The toolset embodies the scientific and programmatic investments of the California Wetland Monitoring Workgroup (CWMW), its many related state and federal agencies, non-governmental organizations (NGOs), and private consultants, as well as the goals of the growing set of stakeholders who have expanded the circle of interested parties over the years. It is known by many names -- “WRAMP” being most common -- but in its essence it comprises the following tools:  ● EcoAtlas map viewer ● Project Tracker ● The California Aquatic Resources Inventory (CARI) map and editor tool ● The California Rapid Assessment Method (CRAM) ● The Riparian Zone Estimator Tool (RipZET) Now highly capable, the toolset represents more than science and technology alone, but a distillation of both, customized to meet specific goals associated with the landscape-scale tracking and characterization of California’s aquatic resources. The US Environmental Protection Agency (US EPA), for instance, has supported the toolset through multiple development grants so that the collected tools might be complementary to a still-nascent, statewide wetland protection program. Meanwhile, the state’s Coastal and Delta Conservancies require the use of the tool, and regional water boards -- including SF Bay, Lahontan, and North Coast -- regularly employ the tool for mitigation and restoration project tracking. Essentially, EcoAtlas has proven critical to a variety of programs and represents a successful product of broad-based collaboration. However, it currently stands at a crossroads, and its stakeholders must direct the toolset’s future. The following plan is intended to ensure the continued vitality of the toolset. The plan’s success will depend upon the continued collaboration of the public agencies that have supported the toolset thus far, but it must also integrate principles of resilience as it accounts for the tensions that arise as organizations move in different strategic directions. 

Applying the Connectivity Approach: Groundwater management in California's Kings Basin

California Roundtable on Water and Food Supply (CRWFS) | March 27th, 2015

The California Roundtable on Water and Food Supply (CRWFS) studied the processes used in the Kings Groundwater Subbasin (Kings Basin) of California’s San Joaquin Valley

The California Roundtable on Water and Food Supply (CRWFS) studied the processes used in the Kings Groundwater Subbasin (Kings Basin) of California’s San Joaquin Valley to reveal strategies for advancing groundwater sustainability within the context of watershed-scale, integrated water management. This inquiry was guided by the principles of the “connectivity approach”: a framework developed by CRWFS for resource managers, land use planners and policymakers to discover the linkages, strengths, successes, potentials, and disconnects related to their particular resource stewardship issues. A key concept is connected benefits, which refers to achieving multiple benefits across resource and development sectors to respond to California’s increasing water management challenges.

Applying the connectivity approach: Water and food supply projects in California that connect, link, and engage

California Roundtable on Water and Food Supply (CRWFS) | April 11th, 2014

In delving into the connectivity concept and approach, members of the California Roundtable on Water and Food Supply (CRWFS) felt that it was very important to look to ex

In delving into the connectivity concept and approach, members of the California Roundtable on Water and Food Supply (CRWFS) felt that it was very important to look to existing and emerging projects that were already embracing the concepts being discussed. Projects were selected to highlight the three high priority areas for effecting change: connected thinking, institutional linkages, and public engagement. The five examples included in this booklet as case assessments illustrate several ways the connectivity approach is currently being applied throughout California. The assessments are intended to generate ideas for applying the guiding principles of the connectivity approach and the positive impacts that emerge from them. The assessments are not meant to serve as an evaluation of the merit of the projects. This booklet is intended to accompany From Crisis to Connectivity: Renewed Thinking About Managing California’s Water and Food Supply, which more fully describes the connectivity approach illustrated here.

Applying the Public Trust Doctrine to River Protection

California Department of Water Resources (DWR) | June 9th, 2004

The public trust is an ancient doctrine, stemming from Roman law. The Institutes of Justinian state that “by natural law, these things are common property of all: air,

The public trust is an ancient doctrine, stemming from Roman law. The Institutes of Justinian state that “by natural law, these things are common property of all: air, running water, the sea, and with it the shores of the sea.” In medieval England this notion was picked up and turned into a declaration that the shores of the sea are common to all and inalienable. The concept was adopted in the United States. As early as 1821, a New Jersey court held that the state could not convey into private ownership the public lands covered by tidal waters, and that any grant purporting to do so was void. These waters are vested in the sovereign state, the court held, not for its own use, but for the use of its citizens for “passing and repassing, navigation, fishing, fowling, sustenance, and all the other uses of the water and its products...” Arnold v. Mundy, 6 N.J.L. 1 (1821). Although the legislature may build dams, locks and bridges in the general interest of improving navigation, the court stated, “they may not consistently with the principles of the law of nature and the constitution of a well-ordered society, make a direct and absolute grant of the waters of the state, divesting all the citizens of their common right.” That, said the Chief Justice, would be a grievance “which never could be long borne by a free people.” Id at 78. The public trust, like the ten commandments, has traditionally been phrased in terms of prohibition: “Thou shalt not abdicate the State’s control over its navigable waters.” More recently, however, this hoary common law creature, with roots in the civil laws of the Roman emperors, the English monarchs and the Spanish kings, has emerged from its long submerged home to impose new protections for the environment and new duties on governmental agencies.

Appraisal of the water resources of Death Valley, California–Nevada

U.S. Geological Survey (USGS) | December 1st, 1977

Approaches for groundwater management in times of depletion and regulatory change

University of California, Davis (UC Davis) | June 1st, 2018

New legislation and related regulations in California mandate groundwater management to avoid undesirable results from excessive groundwater pumping and other hum

New legislation and related regulations in California mandate groundwater management to avoid undesirable results from excessive groundwater pumping and other human activities. Required aspects of management planning that will occur in well over 100 alluvial groundwater sub-basins across the state include scientific foundation and public transparency. While the details of individual groundwater management approaches will be particular to conditions in each management area, there will be common elements based on similar aspects of many groundwater systems in the state. The process of beginning to implement groundwater management for a large part of the state poses challenges. Use of scientific knowledge and methods of analysis developed in academia and industry will be helpful to the overall effort. This dissertation considers aspects of groundwater management that are expected to be common among many planning efforts. Inactive water supply wells acting as conduits for contaminant migration is considered through field examples and use of recently available databases regarding existing well constructions and water quality. Nonpoint source pollution effects on groundwater quality from conduit wells are investigated and selective regulatory action is explored as an option for addressing an issue that is too large for complete solution with available resources. Options for managed aquifer recharge are explored for a combined urban-agricultural area through use of a recently released land use database. A hydro-economic analysis is performed using linear programming to evaluate the efficacy of an on-farm recharge approach. Future work may include development of additional insights within the context of the study areas presented as well as extensions that consider new geographic areas and additional related considerations.

Approaches to Planning Water Resources

University of California, Davis (UC Davis) | July 15th, 2008

This paper attempts to summarize and organize various technical  approaches often seen or discussed for water resources planning. The basic approach to rational planning

This paper attempts to summarize and organize various technical  approaches often seen or discussed for water resources planning. The basic approach to rational planning is presented, followed by brief reviews of Requirements-based, Benefit-Cost-based, Multi-objective, Conflict Resolution, Market-based, and Muddling Through approaches to planning. Each approach has particular advantages and disadvantages for specific situations. Each approach also tends to have somewhat different analytical requirements. These approaches are discussed in terms of practical contributions to solving long-term water problems in contemporary contexts.

Appropriative Water Rights in California: Background and Issues

California State Water Resources Control Board (SWRCB) | May 1st, 1977

This paper is part of a series of background and issue papers prepared by the staff of the Governor's Commission to Review California Water Rights Law. TABLE OF CONTEN

This paper is part of a series of background and issue papers prepared by the staff of the Governor's Commission to Review California Water Rights Law. TABLE OF CONTENTS I. Introduction II. Historical Background of Appropriative Rights III.  The Mechanics of Prior Appropriation IV.  Statements of Water Diversion and Use V.  Disputes Over Rights to Water VI.  Enforcement VII.  Loss of Appropriative Rights VIII.  Criticisms of Prior Appropriation Doctrine IX.  Water Use Planning and Allocation Issues