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Afluencia en la Base - afluencia en forma sostenida 0 en<br />

buen tiempo. En la mayorla de las corrientes la afluencia<br />

en la base esti <strong>com</strong>puesta esencialmente de1 agua<br />

subterranea que fluye. No obstante, la distincion es la<br />

misma que hay entre flujo de la corriente y la afluencia.<br />

Cuando el concept0 en 10s tkrminos flujo de la base y<br />

afluencia en la base es el de1 flujo natural en una corriente,<br />

la afluencia en la base es el tkrmino logico. (Ver<br />

tambien Afluencia Suberranea y Afluencia Directa).<br />

Datos Hidroldgicos Bhsicos - incluye inventarios de<br />

caracterkticas de1 terreno y el agua que van’s solo de un<br />

lugar a otro (ejemplos son 10s mapas topogr5ficos y<br />

geolbgicos), y registra 10s procesos que varian con lugar y<br />

tiempo. (Registros de precipitacibn, caudal de las corrientes,<br />

aguas subterraneas y analisis de la calidad de1<br />

agua son algunos ejemplos).<br />

Information hidrologica basica es un tkrmino amplio que<br />

incluye las investigaciones de 10s recursos acuaticos de<br />

areas particulares y un estudio de sus procesos fkicos y<br />

econbm+os relacionados, inter-relaciones y mecanismos.<br />

Beneficios (Econbmicos) - el aumento en valor<br />

economico producido por la adicion de1 proyecto de hidroelectricidad,<br />

tipicamente representado <strong>com</strong>a una serie de<br />

valores proyectados sobre el tiempo, producido por la<br />

generation de energia hidroelectrica. En 10s proyectos de<br />

pequeiias plantas hidroelectricas esto esti con frecuencia<br />

limitado, para 10s fines de1 analisis, al flujo de 10s costos<br />

que setian representatives de1 cost0 minimio de la fuente<br />

alternativa de energia equivalente.<br />

Gapacidad - la ener@ maxima de salida o carga para la<br />

cual se evalua una turbina-generador, estacibn o sistema.<br />

Yalor de la Capacidad - la parte de1 valor de1 mercado<br />

de la energia ektrica que se asigna a la capacidad<br />

segura.<br />

Factor de Recuperacih de1 Capital - un valor<br />

matem5tico de finanzas utilizado para convertir una suma<br />

global en una serie de valores anuales uniformes.<br />

Area de Coleccih - ver Cuenca de Drenaje.<br />

C!ima - la suma total de elementos meteoroldgicos que<br />

caracterizan las condiciones normales y extremas de la atmosfera<br />

durante un largo pen’odo de tiempo en cualquier<br />

lugar o region sobre la superficie de la tierra. El estado<br />

colectivo de la atmdsfera en un lugar determinado o en un<br />

area determinada dentro de un period0 de tiempo<br />

especificado.<br />

ho Clim&ico - un petiodo continua de 12 meses<br />

durante el cual ocurre un ciclo anual <strong>com</strong>plete, selec-<br />

cionado arbitrariamente para la presentacidn de datos<br />

relativos a fenomenos hidrologicos o meteorologicos. Este<br />

ario climatico es usualmente designado por el ario calen-<br />

dario (Ver ano acuatico).<br />

Almacenamiento gara Conservacidn - el almacena-<br />

miento de1 agua para ser utilizada posteriormente para<br />

fines titiles tales <strong>com</strong>a el abastecimiento de aguas<br />

distinction is the same as that between streamflow<br />

and runoff. When the concept in the terms base flow<br />

and base runoff is that of the natural flow in a stream,<br />

base runoff is the logical term. (See also Ground water<br />

runoff and Direct runoff).<br />

Basic Hydrologic Data - includes inventories of<br />

features of land and water that vary only from place to<br />

place (topographic and geologic maps are examples),<br />

and records of processes that vary with both place<br />

and time. (Records of precipitation, streamflow,<br />

groundwater and quality-of-water analyses are ex-<br />

amples).<br />

Basic hydrologic information is a broader term that<br />

includes surveys of the water resources of particular<br />

areas and a study of their physical and related<br />

economic processes, interrelations and mechanisms.<br />

Benefits (Economic) - the increase in economic<br />

value produced by the hydropower addition project,<br />

typically represented as a time stream of value pro-<br />

duced by the generation of hydroelectric power. In<br />

small hydro projects this is often limited for analysis<br />

purposes to the stream of costs that wouid be<br />

representative of the least costly alternative source of<br />

equivalent power.<br />

Capacity - the maximum power output or load for<br />

which a turbine-generator, station, or system is rated.<br />

Capadity Value - that part of the market value of<br />

electric power which is assigned to dependable<br />

capacity.<br />

Capital Recovery Factor - a mathematics cf finance<br />

value used to convert a lump sum amount to an<br />

equivalent uniform annual stream of values.<br />

Catchment Area - see Drainage Basin<br />

Climate - the sum total of the meteorological<br />

elements that characterize the average and extreme<br />

condition of the atmosphere over a long period of time<br />

at any one place or region of the earth’s surface. The<br />

collective state of the atmosphere at a given place or<br />

over a given area within a specified period of time.<br />

Climatic Year - a continuous 12-month period during<br />

which a <strong>com</strong>plete annual cycle occurs, arbitrarily<br />

selected for the presentation of data relative to<br />

hydrologic or meteorologic phenomena. The climatic<br />

year is usually designated<br />

Water Year).<br />

by the calendar year. (See<br />

321<br />

Conservation Storage - storage of water for later<br />

release for useful purposes such as municipal water<br />

supply, power, or irrigation in contrast with storage<br />

capacity used for flood control.<br />

Consumptive Use - the quantity of water absorbed<br />

by the crop and transpired or used directly in the<br />

building of plant tissue with that evaporated from the<br />

cropped area.

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