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Showing 1 to 20 of 105 for “"Arroyo"”.
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Phylogeography and Conservation of the Arroyo Toad (Bufo californicus)
<p>The Arroyo Toad <em>(Bufo cakfomicus)</em> is an endangered species found in rivers of southern California, USA and northern Baja California, Mexico. It has experienced population declines throughout its range, as a result of urbanization, hydrologic alterations, and overall habitat loss. As …
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Holocene Arroyo Cut and Fills Cycles, South-Central Washington
<p>Ephemeral streams have cut deeply incised arroyos into alluvial and eolian sediments in many of the watersheds within the Yakima Training Center (YTC) military reservation, south-central Washington. The most recent channel incision episode along Selah Creek is primarily attributed to multiple …
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Historic Preservation Approaches for the City of Arroyo Grande
… for many local municipalities, the City of Arroyo Grande in particular, is that historic structures are at risk of demolition and inappropriate alterations. Through a multi-modal approach, this project seeks to find ways that structures can be preserved. The project looks at how the federal, …
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Agricultural Buffer Criteria for the City of Arroyo Grande
… residents from nuisance complaints. The City of Arroyo Grande has agricultural buffer policies which apply to development taking place adjacent to agricultural land. The City’s general plan requires a minimum100 foot buffer between all parcels proposed for non-agricultural development adjacent to …
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Greywater as a Method of Water Conservation in Arroyo Grande
… of decentralized greywater usage in the City of Arroyo Grande. This professional project consists of two products: a brief greywater guide for the City and a background report. The greywater guide is intended for city planners to use for general information about greywater systems. The guide …
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Hidrología e hidroquímica de la cuenca del arroyo El Divisorio, provincia de Buenos Aires
La investigación se realizó en la cuenca del arroyo El Divisorio, el que desemboca en el embalse Paso de las Piedras, aportando el 20 % del agua y el 50 % de los contaminantes de origen natural que condicionan la calidad del recurso hídrico, cuando sus concentraciones superan los valores límites …
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Phytoremediation of Weathered Petroleum in Groundwater by Arroyo Willows in Nutrient Amended On-Site Mesocosms
… OF WEATHERED PETROLEUM IN GROUNDWATER BY ARROYO WILLOWS IN NUTRIENT AMENDED ON-SITE MESOCOSMS SARAH BRAGG-FLAVAN A large-scale mesocosm study was conducted to determine if vegetation with willow trees enhances biodegradation and to evaluate the mechanisms of natural biodegradation of …
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Investigación cuantitativa del transporte de sedimentos en avenidas torrenciales: aplicación al caso del arroyo del partido Huelva
… Torrencial, utilizando de referente el arroyo del Partido, que en el periodo 1982-99 ha generado un gran cono de sedimentación en la Marisma de El Rocío (Parque Nacional de Doñana). De este modo: 1,- Profundiza en la conceptualización del significado de un curso torrencial. 2,- Analiza …
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Artificialización del soporte natural y riesgo hídrico : construcción de vulnerabilidades en la cuenca alta del Arroyo Pigüé
… Sierras de Curamalal sobre el curso superior del Arroyo homónimo se identifican caracteres similares a los descriptos. Allí, la convergencia de factores naturales y antropogénicos potencian las condiciones de anegabilidad generando inundaciones recurrentes. El comportamiento torrencial de la …
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Caracterización y análisis de los depósitos sedimentarios de áreas de vaguada en dehesas de Extremadura: Arroyo de Guadalperón (Cáceres)
La presente memoria recoge el trabajo de investigación desarrollado en las áreas de depósito de vaguada en dehesas de Extremadura (cuenca de Guadalperalón, Cáceres) con el objetivo de establecer, a través del análisis de la secuencia sedimentaria, las condiciones que han controlado los procesos de …
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Percepción y representaciones sociales del riesgo hídrico en el sudoeste bonaerense : el caso de la cuenca del arroyo Napostá Grande
La cuenca del arroyo Napostá Grande incluye los partidos de Tornquist y Bahía Blanca y presenta un régimen marcado por una gran variabilidad con épocas de abundante caudal y períodos de estiaje. En su trayecto, atraviesa diferentes tipos de asentamientos correspondientes al espacio urbano y rural, …
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Metodología de cálculo del factor topográfico, LS, integrado en los modelos Rusle y Usped. Aplicación al arroyo del lugar, Guadalajara (España).
El modelo paramétrico USLE y sus actuales revisiones, RUSLE, RUSLE3D y USPED, continúan siendo los modelos de mayor aplicación para determinar los efectos de la erosión hídrica en cuencas de montaña. En estos modelos, los efectos de la topografía sobre la pérdida de suelo están representados por el …
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Modeling Flood Reduction Scenarios for a Small Coastal Community
<p>The Arroyo Grande Creek Watershed, an approximately 170 mi<sup>2</sup> watershed located on the central coast of California, drains to the Pacific Ocean via the Arroyo Grande Creek that passes through several coastal cities including the community of Oceano. At the mouth of the Creek is the …
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BIOSTRATIGRAPHIC AND PALEOCEANOGRAPHIC RECONSTRUCTION OF THE LATE MIOCENE IN BAJA CALIFORNIA AND TRES MARIAS ISLANDS, MEXICO
… seven land-base sections (El Cien, Tortugas, Arroyo Tiburon, Cabo San Lucas-La Paz, San Felipe, Arroyo Hondo and Maria Cleofas) together with Experimental Mohole (the only offshore site) were considered worthy of pursuit in this study. The most significant siliceous deposition in the selected …
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Holocene Periods of Aggradation and Incision, Hanson Creek, Washington
… ridges. Sixteen stratigraphic profiles in the arroyo walls were used to delineate and correlate past depositional episodes based on sediment characteristics. Basal ages of the earliest documented depositional period were constrained using geochemical analysis of tephra beds. Intermediate dates …
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Small mammal and herpetofauna communities and habitat associations in foothills of the Chihuahuan Desert
… the Chihuahuan Desert. Sampled habitats included arroyos and adjacent uplands under 3 conditions of physiography: upper, middle, and lower. Sampling was conducted during late spring and early fall, 1993-94. Eighteen species of heteromyid and murid rodents were captured. Abundance decreased 34% …
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A Water Balance and Sediment Yield Analysis Model for the Lopez Lake Reservoir
… source of potable water for the Cities of Arroyo Grande, Grover Beach, Pismo Beach, and to the Community Service Districts of Oceano and Avila Beach. In this study, a water balance and sediment yield analysis model was developed for the reservoir’s watershed. The model was used to estimate …
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