23.04.2013 Views

Small Decentralized Hydropower Program National ... - Cd3wd.com

Small Decentralized Hydropower Program National ... - Cd3wd.com

Small Decentralized Hydropower Program National ... - Cd3wd.com

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

generales. El siguiente procedimientr, es sugerido<br />

por Linsley (1958).<br />

“(a) Compile 10s mejores mapas de la regibn,<br />

formando - si fuere posible - un mapa principal<br />

con la escala m&s grande que sea p3sib!e. Dibuje<br />

sobre el mapa, delineando las cuencas de 10s ties<br />

rngs importantes detailados en la encuesta.<br />

“(b) Recoja o por lo menos determine la ubicaci6n<br />

de todos 10s archives pertinentes a 10s datos hidro-<br />

16gicos. Ubique en el mapa principal 10s sitios de<br />

todas las estaciones de observacZn, usando<br />

simbolos apropiados para indicar la naturaleza de<br />

la observacibn. Si hay instrucciones impresas para<br />

la observacibn, colecci6nelas. Si no las hay, deter-<br />

mine por medio de entrevistas 10s medios de<br />

observaci6n y 10s tipos de instrumentos utilizados.<br />

Hasta donde sea posible evalde 1~ veracidad de 10s<br />

diferentes puntos contenidos en la informaci6n<br />

disponible. Prepare una Grafica de Barras<br />

mostrando el per;‘odo actual de! registro por cada<br />

dato en cada estaci6n. Si es posible, indique en el<br />

cuadro 10s cambios en frequencia o cambios en el<br />

metodo de observacibn y una estimaci6n de lae<br />

veracidad de 10s datos.<br />

“(c) Examine toda la literatura existente sobre<br />

hidrologia, climatologia, geologia y geogrtia de 1~<br />

regirjn. Prepare una bibliografia de todo este<br />

material, anotada si es posible, para referencias<br />

futuras durante la encuesta y para uso en estudios<br />

futures. Lea de esta literatura tanto <strong>com</strong>a parazca<br />

6til y anote cualquier informaci6n o conclusi6n per-<br />

tinentes a la encucsta.<br />

“(d) Haga una inspeccidn topogrtiica de la regibn,<br />

visitando cada una de las regiones m& impor-<br />

tantes en cuanto a clima y topografia. Hasta<br />

donde sea posible, inspeccione el detalle de mapas,<br />

especialmente para ubicar las divisorias y la dircc-<br />

cicin de las corrientes de 10s ties que generalmente<br />

e&in erradas en mapas inadecuados. Use muchas<br />

fotografias para ilustrar 10s diferentes tipos de<br />

terreno, de vegeta&n, y las caracterkticas de 10s<br />

cauces fluviales. Tome nota de 10s sitios que selian<br />

adecuados para estaciones de observac%n,<br />

especialmente caudales y sitios para represas.<br />

Visite tantas estaciones de observacibn <strong>com</strong>a<br />

fuese posible anotando las condiciones de1 equipo,<br />

las ticnicas de observac%n, etc. para asi sustentar<br />

la evaluaci6n que se hate de la veracidad de 10s<br />

datos.<br />

“(e) Si la informacibn disponible es muy limit&a y<br />

existe la perspectiva de colectar informaci6n<br />

30<br />

bar chart showing the actual period of record<br />

for each item of data at each station. If<br />

possible indicate on the chart changes in fre-<br />

quency or method of observation and the<br />

estimated reliability of the data.<br />

“(c) Survey all existing literature on the<br />

hydroiogy, ciimatology, geoiogy and geo-<br />

graphy of the region. Prepare a bibliography of<br />

this material, annotated if possible, for further<br />

reference during the survey and future use in<br />

other studies. Read as much of this literature<br />

as seems useful and note any information or<br />

conclusion which are pertinent to the survey.<br />

“(d) Make a field survey of the region, visiting<br />

each of the major climatic and topographic<br />

regions. Insofar as possible check the detail<br />

of maps, especially the location of divides and<br />

the direction tif flow of streams which are<br />

often in error c,n inadequate maps. Use<br />

photographs freely to illustrate the various<br />

types of terrain, vegetal cover, and the<br />

characteristics of stream channels. Note sites<br />

which would be suitable for observation<br />

stations, especially streamflow, and for dam<br />

sites. Visit as many observation stations as<br />

possible noting condition of equipment,<br />

techniques of observation, etc. to support the<br />

evaluation of data reliability.<br />

“(e) If the available data are very limited and<br />

there is prospect of collecting information of<br />

value before the <strong>com</strong>pletion of the survey,<br />

re<strong>com</strong>mend the immediate installation of<br />

stations. Crude rain gauges can be frabricated<br />

of tin cans or oil drums, staff gauges can<br />

easily be made by painting scales on existing<br />

structures or on planks, and float<br />

measurements of streamflow require little<br />

equipment. The type and quality of observa-<br />

tion will depend on the local conditions.<br />

However, even limited data on the low flow of<br />

streams or on floods, may prove very useful.<br />

“(f) Outline the studies required in the<br />

preparation of the survey report...”<br />

Although the above-suggested procedures<br />

were re<strong>com</strong>mended for consideration in<br />

reaching conclusions concerning water resource<br />

surveys in general, the steps are logical for a<br />

thorough analysis of hydropower potential. In<br />

particular, it is too easy to overlook the fact that<br />

an adequate hydrologic analysis must include<br />

an on-the-ground inspection of the area in ques-

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!