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River

Pastaza River

710 km from source to mouth · Peru and Ecuador.

PeruEcuadorPeru and EcuadorFlows into Marañón River8th longest in Peru

Follow the riverMonth by month

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

In numbers

Length

710km

Average flow

2,300m³/s

Basin

41,000km²

Drop

2,523m

from 2,648 m to 125 m

Countries

2

The journey

From source to mouth

710 km of river and 11 stops on the way: 2 towns and cities on its banks, dams, bridges and the tributaries that feed it.

2,648 m125 m
Sourceat 2,648 m0 km
Cascada Chamana42 m61 km
Puyo Rivertributary137 km
Bobonaza Rivertributary348 km
Laguna Naranjal0.5 km²429 km
Marañón Riverat 125 m710 km
0200400600710 km
  1. 0 kmSourceat 2,648 m
  2. 3 kmSan Miguel10,838 people
  3. 53 kmChambo Rivertributary
  4. 53 kmPatate Rivertributary
  5. 57 kmBaños14,100 people
  6. 61 kmCascada Chamana42 m
  7. 68 kmManto de la Novia
  8. 71 kmAgoyán
  9. 73 kmCascada el Pailón del Diablo(dueño el walter)
  10. 137 kmPuyo Rivertributary
  11. 348 kmBobonaza Rivertributary
  12. 429 kmLaguna Naranjal0.5 km²
  13. 710 kmMarañón Riverat 125 m

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

Tributary of the Marañón River in Ecuador and Peru

At the mouth it carries 2,326 m³/s on average: an Olympic pool every 1.1 seconds. It drops from 2,648 m to 125 m, 3.6 m per kilometre on average. Its basin covers 41,000 km², about the size of CH. 1.3 million people live in it. Highest water: from April to July. No large dam holds it back: it is one of the world's free-flowing rivers.

Read more on Wikipedia

Where to start

  • BañosLargest city on its banks · 14,100 people
  • Cotopaxi International Airport (LTX)Nearest airport with scheduled flights, 58 km from the cityCar hire at UIO airport (Quito)Discover Cars · Affiliate link
  • On the water6 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
  • From December to February and from August to SeptemberThe best months to visit

Pastaza River, month by month

Highest water: from April to July

Best months to visit: from December to February and from August to September.

2,000
24°188 mmJan
1,800
24°187 mmFeb
2,300
24°236 mmMar
2,700
24°243 mmApr
2,900
24°222 mmMay
3,000
23°241 mmJun
2,700
23°203 mmJul
2,200
23°166 mmAug
1,900
24°194 mmSep
1,900
24°206 mmOct
2,300
24°218 mmNov
2,200
24°192 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 1,800 m³/s in the lowest month to 3,000 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

Pastaza River: the basin in numbers

42,459 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.
  • 1.3millionpeople live in the basin
  • 30/km²people per km²
  • 1,088maverage altitude of the basin
  • 2,285mmof rain a year (basin average)
  • 21.3°Caverage air temperature
  • 10%protected areas
  • 0.2%covered by lakes

What covers the basin

  • 69% Forest
  • 5% Cropland
  • 14% Pasture
  • 1% Towns and cities

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

Pastaza River: what you find on the way

  • 1DamsCentral Hidroagoyan
  • 2WeirsRepresa Agoyan
  • 33WaterfallsSiete Choros, Cascada Ines María, Cascada de la Virgen and 30 more
  • 3Boat ramps
  • 3Ferry piersPuerta principal

From OpenStreetMap, within 2.2 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

Pastaza 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.

  • 4waterfalls on the riverCascadyas
  • 1lake on its wayLakeyas
  • 2mountains at the sourcePeakyas

Waterfalls (4)

On the river, by Cascadyas

  1. Cascada Chamanakm 6342m
  2. Manto de la Noviakm 70
  3. Agoyánkm 73
  4. Cascada el Pailón del Diablo(dueño el walter)km 75

Cascadyas is coming soonOpen Cascadyas ↗

Lakes and reservoirs (1)

Lakes it flows through, by Lakeyas

  1. Laguna Naranjalkm 4420.5km²

Lakeyas is coming soonOpen Lakeyas ↗

Mountains at the source (2)

Within 15 km of the source, by Peakyas

  1. Cumbijín13 km away
  2. Guangotasín13 km away

Open Peakyas ↗

From space

The source and the mouth, seen from orbit

Pastaza River: satellite view of the source
The source14 km across
Pastaza River: satellite view of the mouth
The mouth28 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

Pastaza River in pictures

Pastaza river,
F Delventhal · CC BY 2.0
Ecuador bridgeoverthePastazas2
André Hübner · CC BY-SA 3.0
RioPastaza
The lifted lorax · CC BY-SA 3.0
EL RIO PASTAZA - panoramio
DIOHER_PAVAL · CC BY 3.0

Where these numbers come from

Name, length, placesWikidata (Q685475) · 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 atlasesCascadyas, Lakeyas, Peakyas — 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