River
Dulce River
650 km from source to mouth · Argentina.
ArgentinaFlows into Mar Chiquita7th longest in Argentina
In numbers
Length
650km
Average flow
80m³/s
Basin
89,936km²
Drop
438m
from 507 m to 69 m
Country
1
The journey
From source to mouth
650 km of river and 8 stops on the way: 3 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmSourceat 507 m
- 0 kmDique El Cadillal
- 22 kmAlderetes38,466 people
- 142 kmRio Hondo Reservoir218 km²
- 146 kmTermas de Río Hondo27,838 people
- 222 kmLos Quiroga Dam
- 232 kmSantiago del Estero - La Banda road bridge
- 236 kmSantiago del Estero252,192 people
- 599 kmLaguna de Los Porongos1.3 km²
- 650 kmMar Chiquitaat 69 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
In the Argentine province of Santiago del Estero
At the mouth it carries 80 m³/s on average: an Olympic pool every 31 seconds. It drops from 507 m to 69 m, 0.7 m per kilometre on average. Its basin covers 89,936 km², about the size of RS. 2.0 million people live in it. Highest water: from February to March; lowest: from July to October. Dams and reservoirs hold back a large share of its water (47% of a year's flow).
Where to start
- Santiago del EsteroLargest city on its banks · 252,192 people
- Vicecomodoro Angel D. La Paz Aragonés Airport (SDE)Nearest airport with scheduled flights, 6 km from the cityCar hire in Santiago del EsteroDiscover Cars · Affiliate link↗
- From May to June and from August to OctoberThe best months to visit
Dulce River, month by month
Highest water: from February to March
Lowest water: from July to October. Best months to visit: from May to June and from August to October.
From about 120 m³/s in the lowest month to 200 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
Dulce River: the basin in numbers
69,584 km² of land send their water to this river. This is what lives on it.
- 2.0millionpeople live in the basin
- 28/km²people per km²
- 501maverage altitude of the basin
- 634mmof rain a year (basin average)
- 19.4°Caverage air temperature
- 1%protected areas
- 0.8%covered by lakes
- 2.2km³held in reservoirs
What covers the basin
- 38% Forest
- 7% Cropland
- 8% 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
Dulce River: what you find on the way
- 7Weirs
From OpenStreetMap, within 2.3 km of the river. Not mapped is not the same as not there.
Cross-checked with our atlases
Dulce 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.
2lakes on its wayLakeyas
Lakes and reservoirs (2)
Lakes it flows through, by Lakeyas
- Rio Hondo Reservoirkm 142218km²
- Laguna de Los Porongoskm 5991.3km²
Lakeyas is coming soonOpen Lakeyas ↗
From space
The source and the mouth, seen from orbit


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
Dulce River in pictures
Tributaries
Where it flows, and what flows into it
Tributaries (2)
Also: Río Lules, Río Marapa
Where these numbers come from
| Name, length, places | Wikidata (Q2565430) · CC0 |
|---|---|
| Course, profile, basin | RiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed from the source to the mouth given by Wikidata |
| Flow | WaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0 |
| Climate along the river | WorldClim (RiverATLAS), 1970–2000 · CC BY 4.0 |
| Towns, bridges, dams | Wikidata · CC0; GeoNames · CC BY 4.0 |
| Along the river | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
| Our other atlases | Lakeyas — 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.



