The Saladillo Stream (

Spanish Spanish might refer to: * Items from or related to Spain: **Spaniards are a nation and ethnic group indigenous to Spain **Spanish language, spoken in Spain and many Latin American countries **Spanish cuisine Other places * Spanish, Ontario, Cana ...

, Arroyo Saladillo or Río Saladillo) is a small

tributary A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage ...

of the

Paraná River The Paraná River ( es, Río Paraná, links=no , pt, Rio Paraná, gn, Ysyry Parana) is a river in south-central South America, running through Brazil, Paraguay, and Argentina for some ."Parana River". Encyclopædia Britannica. Encyclopædia Br ...

, that discharges into it between the cities of

Rosario Rosario () is the largest city in the central provinces of Argentina, Argentine province of Santa Fe Province, Santa Fe. The city is located northwest of Buenos Aires, on the west bank of the Paraná River. Rosario is the third-most populous ci ...

and

Villa Gobernador Gálvez Villa Gobernador Gálvez is a city in the provinces of Argentina, province of Santa Fe Province, Santa Fe, Argentina, located on the western ravine of the Paraná River, within the metropolitan area of Greater Rosario. It had 74,509 inhabitants per ...

, in the . It serves as the political border between these two towns of the

Greater Rosario Greater Rosario is the metropolitan area of the city of Rosario, in the province of Santa Fe, Argentina. This metropolis has a population of about 1.3 million (1,276,000 million inhabitants) thus being Argentina's third most populated urban s ...

area, and is one of the two important affluents of the Paraná in the area, together with the

Ludueña Stream The Ludueña Stream (in Spanish, Arroyo Ludueña) is a small river (about long including its tributaries) in the , which starts near the city of Rosario and flows through it, mostly east-southwards, ending in the Paraná River in the neighbourhoo ...

in the north. Although in Spanish the Saladillo is called an ''arroyo'', it is not an

arroyo Arroyo often refers to: * Arroyo (creek), an intermittently dry creek Arroyo may also refer to: People * Arroyo (surname) Places United States ;California * Arroyo Burro Beach, a public beach park in Santa Barbara County, California * Arroyo ...

in the English sense of a dry or

intermittent stream Intermittent, temporary or seasonal rivers or streams cease to flow every year or at least twice every five years.(Tzoraki et al., 2007) Such rivers drain large arid and semi-arid areas, covering approximately a third of the earth's surface. ...

. The Spanish word ''arroyo'' means "stream" or "brook", but the Saladillo is a sizable

river A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of wate ...

with a

drainage basin A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, t ...

encompassing . Río Saladillo is a variant name in Spanish. Its water services an important area in the southern part of Santa Fe province—both economically for

agriculture Agriculture or farming is the practice of cultivating plants and livestock. Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to ...

, and demographically, since its last few kilometres flow through inside a densely populated area (Rosario has over a million residents). The port of Villa Gobernador Gálvez is located on the mouth of the Saladillo. Most of the Saladillo is

canalized River engineering is a discipline of civil engineering which studies human intervention in the course, characteristics, or flow of a river with the intention of producing some defined benefit. People have intervened in the natural course and b ...

, and parts are channelized, as are its main tributaries. It requires periodic

dredging Dredging is the excavation of material from a water environment. Possible reasons for dredging include improving existing water features; reshaping land and water features to alter drainage, navigability, and commercial use; constructing da ...

to support its massive use for agriculture, which in turn degrades the

water quality Water quality refers to the chemical, physical, and biological characteristics of water based on the standards of its usage. It is most frequently used by reference to a set of standards against which compliance, generally achieved through tr ...

with

pollutant A pollutant or novel entity is a substance or energy introduced into the environment that has undesired effects, or adversely affects the usefulness of a resource. These can be both naturally forming (i.e. minerals or extracted compounds like oi ...

s such as

pesticide Pesticides are substances that are meant to control pests. This includes herbicide, insecticide, nematicide, molluscicide, piscicide, avicide, rodenticide, bactericide, insect repellent, animal repellent, microbicide, fungicide, and lampri ...

s and

fertilizer A fertilizer (American English) or fertiliser (British English; see spelling differences) is any material of natural or synthetic origin that is applied to soil or to plant tissues to supply plant nutrients. Fertilizers may be distinct from ...

s, and tends to fill the river with

sediment Sediment is a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of wind, water, or ice or by the force of gravity acting on the particles. For example, sand an ...

s produced by

erosion Erosion is the action of surface processes (such as water flow or wind) that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location where it is deposited. Erosion is distin ...

. The Saladillo's

riparian zone A riparian zone or riparian area is the interface between land and a river or stream. Riparian is also the proper nomenclature for one of the terrestrial biomes of the Earth. Plant habitats and communities along the river margins and banks ar ...

is subject to

flood A flood is an overflow of water ( or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrol ...

ing. The lower course is an

urban stream An urban stream is a formerly natural waterway that flows through a heavily populated area. Urban streams are often polluted by urban runoff and combined sewer outflows. Water scarcity makes flow management in the rehabilitation of urban stream ...

, and is

polluted Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, the ...

by industrial and domestic waste.

References

{{Reflist * N. R. Biasatti, M. C. Romano, E. F. Pire, E. N. Micol, C. Diaz, & A. Fragapane. ''Evaluacion Ambiental Del Arroyo Saladillo Y Su Cuenca, Santa Fe, Argentina - Un Caso De Estudio Abordado Desde La Óptica De La Ecología Del Paisaje.'' Retrieved from http://www.brocku.ca/epi/lebk/ecosur.html on 15:32, 16 September 2005 (UTC) (in Spanish). Rosario, Santa Fe Rivers of Argentina Tributaries of the Paraná River Rivers of Santa Fe Province

See also

References