River
Chi River
765 km from source to mouth · Thailand.
ThailandFlows into Mun River2nd longest in Thailand
In numbers
Length
765km
Average flow
290m³/s
Basin
9,300km²
Drop
202m
from 315 m to 113 m
Country
1
The journey
From source to mouth
765 km of river and 10 stops on the way: 5 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmSourceat 315 m
- 136 kmBueng Lahan13 km²
- 167 kmAng Kep Nam Lahan Luk Nok2.2 km²
- 255 kmAng Kep Nam Nong Saeng1.2 km²
- 377 kmKosum Phisai10,672 people
- 415 kmMaha Sarakham51,584 people
- 490 kmAng Kep Nam Bung Chiang Khwan0.5 km²
- 529 kmBan Selaphum17,412 people
- 607 kmYasothon20,414 people
- 607 kmMueang Yasothon129,424 people
- 665 kmAng Kep Nam Huai San Dot0.8 km²
- 765 kmMun Riverat 113 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River in Thailand
At the mouth it carries 290 m³/s on average: an Olympic pool every 8.6 seconds. It drops from 315 m to 113 m, 0.3 m per kilometre on average. Its basin covers 9,300 km², about the size of CY. 5.9 million people live in it. Highest water: September; lowest: from December to March. Dams and reservoirs hold back a large share of its water (40% of a year's flow).
Where to start
- Mueang YasothonLargest city on its banks · 129,424 people
- Roi Et Airport (ROI)Nearest airport with scheduled flights, 53 km from the cityCar hire at BFV airport (Buriram)Discover Cars · Affiliate link↗
- From November to FebruaryThe best months to visit
Chi River, month by month
Highest water: September
Lowest water: from December to March. Best months to visit: from November to February.
From about 90 m³/s in the lowest month to 690 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
Chi River: the basin in numbers
49,404 km² of land send their water to this river. This is what lives on it.
- 5.9millionpeople live in the basin
- 120/km²people per km²
- 259maverage altitude of the basin
- 1,245mmof rain a year (basin average)
- 26.3°Caverage air temperature
- 11%protected areas
- 1.4%covered by lakes
- 3.9km³held in reservoirs
What covers the basin
- 7% Forest
- 46% Cropland
- 1% Pasture
- 4% 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
Chi River: what you find on the way
- 13Weirs
From OpenStreetMap, within 2.2 km of the river. Not mapped is not the same as not there.
Cross-checked with our atlases
Chi 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.
5lakes on its wayLakeyas
11mountains at the sourcePeakyas
Lakes and reservoirs (5)
Lakes it flows through, by Lakeyas
- Bueng Lahankm 11213km²
- Ang Kep Nam Lahan Luk Nokkm 1382.2km²
- Ang Kep Nam Nong Saengkm 2101.2km²
- Ang Kep Nam Bung Chiang Khwankm 4040.5km²
- Ang Kep Nam Huai San Dotkm 5480.8km²
Lakeyas is coming soonOpen Lakeyas ↗
Mountains at the source (11)
Within 15 km of the source, by Peakyas
- Khao Yot Chi2.9 km away
- Khao Um Nang15 km away
- Khao Noen Sawang10 km away
- Khao Khat1.9 km away
- Khao San Baeng Nam4.7 km away
- Phu Peng13 km away
- Khao Thewada11 km away
- Khao Foi Lom9.6 km away
3 more on PeakyasOpen Peakyas ↗
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
Chi River in pictures

Tributaries
Where it flows, and what flows into it
It flows into
Mun RiverTributaries (2)
Also: Phong River, Lam Nam Yang
Nearby
Rivers nearby
Where these numbers come from
| Name, length, places | Wikidata (Q1071554) · 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, 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.