2 edition of Low-flow characteristics at selected sites on streams in eastern Puerto Rico found in the catalog.
Low-flow characteristics at selected sites on streams in eastern Puerto Rico
1992 by U.S. Geological Survey, U.S. Geological Survey, Books and Open-File Reports Section [distributor] in San Juan, P.R, Denver, Colo .
Written in English
|Other titles||Low flow characteristics at selected sites on streams in eastern Puerto Rico|
|Statement||by Luis Santiago-Rivera ; prepared in cooperation with the Puerto Rico Aqueduct and Sewer Authority and the Puerto Rico Environmental Quality Board|
|Series||Water-resources investigations report -- 92-4063, Water-resources investigations report -- 92-4063|
|Contributions||Puerto Rico. Environmental Quality Board, Puerto Rico Aqueduct and Sewer Authority, Geological Survey (U.S.)|
|The Physical Object|
|Pagination||ix, 46 p. :|
|Number of Pages||46|
There is a clear and urgent need to address them. Secondary roads can be a major source of soil and water problems in steep terrain. As a result, some groundwater reservoirs become irreversibly contaminated, or subsidence or saline intrusion take place. Reducing Runoff Pollution in Karst Areas Common Runoff Pollutants Heavy metals lead, copper, zinc, chromium from gasoline, tires, corroded metal, paint, wood preservatives, and motor oil. Since the elevation of the water table is determined by local rainfall, similar reasoning can be applied to studies of groundwater flow in large watersheds. The degree to which individual channels change position is often characteristic of the particular morphology Figs.
Contact the above agencies for help with these recommendations. Inter-channel areas are typically larger than bar-scale channel bars are smaller than the channels that contain them whereas inter-channel areas in an anastomosing channel are wider than the channelsheavily vegetated, and where present, large woody vegetation offers evidence of channel stability. Keywords: flood estimation and control, climate, hydrologic analysis They are also relevant to other natural resources being monitored in many managed lands such as biology, water quality, and hydrology.
Culvert steamer—the deicing of frozen culverts. The main limits for urban development in the Shield are generated by the rainforest ecosystem, with its soils of limited fertility, which are inappropriate for intensive agricultural activity. Clearly, this situation stimulates water use conflicts between the urban and agricultural sectors. The cost information presented here is con- trary to the widely held view that collecting biological field data is unusually expensive The cost effectiveness demonstrated in this assessment can be attributed to a standard, systematic ap- proach to study design, field methods, and data analysis. Snow variables were calculated from elevational distribution and latitude of each catchment.
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Tamic, Thierry. Similar local sequences are observed in the llanos and Amazon regions. Geological Survey [abs. A sinkhole is created when the surface materials collapse or are dissolved into the underground cavern or cave stream.
This study depicts the restoration efforts made at national, state, municipal, and private level in order to restore and perform integrated watershed management in this hydrological unit.
The plains are crossed by many long rivers. People generate a host of wastes and pollutants that must be dealt with. Ohio EPA has operated an intensive stream and river survey program since Keywords: road erosion, erosion control, steep slopes and road grades, soil conservation Straight reaches of alluvial streams can be remarkably stable over long periods of time, making it unnecessary to repeat surveys frequently.
Water Resources of Iberia Parish, Louisiana FS Information concerning the availability, use, and quality of water in Iberville Parish, Louisiana, is critical for proper water-supply management. How many people will be available?
The State used an ecoregional reference site approach to develop biological criteria for Ohio rivers and streams.
This survey of State efforts in biological criteria development il- lustrates both the differences and the many similarities of existing and emerging programs.
Thus, drainage basins in sub-arid climates tend to have a higher sediment yield because they receive enough precipitation to erode and transport sediments, but the roots and canopy afforded by vegetation are still sparse enough to leave much of the land surface unprotected Fig.
The results indicated that an increase in slope subsequently increased the dimensions of scour. The thickness or the type of rust formed on the culvert metal could not be used always as a criterion of the degree of corrosion because the corrosion products for a similar degree vary in relation to the geographic location.
Both warmwater and exceptional warmwater habitats are defined in narrative terms in the Ohio water quality standards and reflect attainment of the "fishable-swimmable" goals of the Water Quality Act. Close inspection of the slopes below the cross-drains revealed that, for all but the largest storms, much of the suspended sediment was trapped onsite as the road water infiltrated or was ponded in surface depressions.
Clearly it must be a discharge that generates sufficient shear stress to move the material that comprises the bed and banks of the channel Andrews and Nankervis, Browse all of the USGS publications warehouse by following a link tree.
Skip to main content. An official website of the United States government year low flow at ungaged streams in Puerto Rico,Water-Resources Investigations Report Use of selected basin characteristics to estimate mean annual runoff and peak discharges.
In addition to the sites used for synoptic sampling in other parts of NAWQA, sites used in the ecological survey will also include low (first through third) order sites selected in pairs so that one member represents a refer- ence site, and the second is representative of a particular type of land use.
This chapter focuses on the organic matter processing in tropical streams. Organic matter derived from many sources provides a basis for stream food webs.
In terms of weight, leaves from the surrounding land constitute the largest allochthonous source of energy for stream consumers besides, fruits, flowers, wood and twigs, and terrestrial 42comusa.com by: Geologic and hydrologic pdf collected at test holes NC-1 pdf NC-3, Guaynabo and San Juan, eastern Puerto Rico U.S.
Geological Survey Open-File Report20 p. Flow characteristics for selected streams in the Great Plains subregion of the Central Midwest aquifer system and selected adjacent areas--Kansas and Nebraska, and parts of.Software Sites Tucows Software Library Shareware CD-ROMs ZX Spectrum CD-ROM Images DOOM Level CD ZX Spectrum Library: Games.
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