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River

Pilcomayo River

1,100 km from source to mouth · Paraguay, Argentina and Bolivia.

ParaguayArgentinaBoliviaParaguay, Argentina and BoliviaFlows into Paraguay River1st longest in Paraguay

Follow the riverMonth by month

SourceMouth
The river and every tributary in its basin, drawn from RiverATLAS (CC BY 4.0).

In numbers

Length

1,100km

Average flow

200m³/s

Basin

270,000km²

Drop

975m

from 1,030 m to 55 m

Countries

3

The journey

From source to mouth

1,100 km of river and 4 stops on the way: 3 towns and cities on its banks, dams, bridges and the tributaries that feed it.

1,030 m55 m
Sourceat 1,030 m0 km
Villamontes39,800 people175 km
Asunción1,482,200 people1,030 km
Paraguay Riverat 55 m1,100 km
02505007501,100 km
  1. 0 kmSourceat 1,030 m
  2. 175 kmVillamontes39,800 people
  3. 1,025 kmSan Ignacio de Loyola International Bridge
  4. 1,026 kmClorinda15,000 people
  5. 1,030 kmAsunción1,482,200 people
  6. 1,100 kmParaguay Riverat 55 m

Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.

River of South America

At the mouth it carries 200 m³/s on average: an Olympic pool every 12 seconds. It drops from 1,030 m to 55 m, 0.9 m per kilometre on average. Its basin covers 270,000 km², about the size of NZ. 963,000 people live in it. Highest water: from February to April; lowest: from July to October. No large dam holds it back: it is one of the world's free-flowing rivers.

Read more on Wikipedia

Where to start

  • AsunciónLargest city on its banks · 1,482,200 people
  • Silvio Pettirossi International Airport (ASU)Nearest airport with scheduled flights, 14 km from the cityCar hire at ASU airport (Asunción)Discover Cars · Affiliate link
  • On the water1 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
  • From May to SeptemberThe best months to visit

Pilcomayo River, month by month

Highest water: from February to April

Lowest water: from July to October. Best months to visit: from May to September.

270
28°117 mmJan
300
27°111 mmFeb
320
25°109 mmMar
300
22°71 mmApr
260
20°40 mmMay
220
17°25 mmJun
180
17°17 mmJul
150
20°10 mmAug
150
22°24 mmSep
160
24°62 mmOct
190
26°83 mmNov
230
27°99 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 150 m³/s in the lowest month to 320 m³/s in the highest. An estimate: the monthly flow is modelled from the lowest and highest months of WaterGAP (RiverATLAS, 1971–2000) and the rain and snow along the river (WorldClim). Dams change the real rhythm. The chip is the average air temperature; below it, the month's rain.

Plan the trip

Plan the trip: boat trips, a bed by the river, a car

Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.

The basin

Pilcomayo River: the basin in numbers

113,765 km² of land send their water to this river. This is what lives on it.

Free-flowingDams upstream can hold only 0.0% of a year's flow: the river still keeps its natural rhythm.
  • 963,000people live in the basin
  • 8/km²people per km²
  • 2,319maverage altitude of the basin
  • 534mmof rain a year (basin average)
  • 15.7°Caverage air temperature
  • 4%protected areas
  • 0.1%covered by lakes

What covers the basin

  • 30% Forest
  • 2% Cropland
  • 36% Pasture

RiverATLAS (HydroATLAS v1.0, CC BY 4.0): land cover, people, protected areas, glaciers and dams over the whole basin upstream of the mouth.

Along the river

Pilcomayo River: what you find on the way

  • 1Weirs
  • 1Boat ramps

From OpenStreetMap, within 2.4 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

Pilcomayo River in our other atlases

What our sister atlases know about the waterfalls on this river, the lakes it flows through, the beaches at its mouth, the mountains where it rises and the islands off its mouth.

  • 1mountain at the sourcePeakyas

Mountains at the source (1)

Within 15 km of the source, by Peakyas

  1. Loma Huaylla Pata13 km away1,963m

Open Peakyas ↗

From space

The source and the mouth, seen from orbit

Pilcomayo River: satellite view of the source
The source14 km across
Pilcomayo River: satellite view of the mouth
The mouth46 km across

Sentinel-2 cloudless 2016 by EOX IT Services GmbH (contains modified Copernicus Sentinel data 2016), CC BY 4.0. The glowing line is the river as drawn by RiverATLAS.

Photos

Pilcomayo River in pictures

Río Pilcomayo visto desde el Puente Internacional San Ignacio de Loyola- a la izquierda, Puerto Falcón (Presidente Hayes, Paraguay); a la derecha, Clorinda (Formosa, Argentina)
Ulises Icardi · CC BY-SA 4.0
Valle Pilcomayo
Walter Segovia · Public domain
Visita al rio Pilcomayo
Nicaela Phuyu · CC BY-SA 4.0
2006.11.23 23 Yacaré Río Pilcomayo Argentina
Hermann Luyken · CC BY-SA 3.0

Where these numbers come from

Name, length, placesWikidata (Q270569) · CC0
Course, profile, basinRiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed along the river network from the point given by Wikidata
FlowWaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0
Climate along the riverWorldClim (RiverATLAS), 1970–2000 · CC BY 4.0
Towns, bridges, damsWikidata · CC0; GeoNames · CC BY 4.0
Along the river© OpenStreetMap contributors · ODbL
ImagesEOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons
Our other atlasesPeakyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; HydroLAKES · CC BY 4.0; NOAA OISST

Every source and licence is on the data sources page.

The family

Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers or canyons?

Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.

beachesCoastyaFind your beach: sea temperature, sun and swimming month by month.Visit
lakesLakeyasEvery lake on Earth: water temperature, ice, depth and the shore.Coming soonVisit
mountainsPeakyasEvery summit in 3D: summit weather, the 0 °C line, huts and trails.Visit
waterfallsCascadyasEvery waterfall: height, flow month by month and when it roars.Coming soonVisit
islandsIslandyasEvery island from the sea up: size, sea temperature, ferries and 3D.Coming soonVisit
riversRiveryasEvery river from source to sea: the journey, the flow and the basin in numbers.You are here
canyonsCanyonyasEvery canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Coming soonVisit