River
Simav Brook
321 km from source to mouth · Turkey.
TurkeyFlows into Mustafakemalpaşa River
In numbers
Length
321km
Average flow
79m³/s
Basin
22,400km²
Drop
817m
from 816 m to -1 m
Country
1
The journey
From source to mouth
321 km of river and 8 stops on the way: 4 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmSourceat 816 m
- 9 kmSimav34,909 people
- 188 kmKepsut5,542 people
- 229 kmMacestus Bridge
- 238 kmSusurluk24,816 people
- 287 kmKaracabey44,256 people
- 292 kmLake Uluabat118 km²
- 296 kmKocaçay Rivertributary
- 318 kmDalyan Lake2.2 km²
- 321 kmMustafakemalpaşa Riverat -1 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River in Balıkesir, northwestern Turkey
At the mouth it carries 79 m³/s on average: an Olympic pool every 32 seconds. It drops from 816 m to -1 m, 2.5 m per kilometre on average. Its basin covers 22,400 km², about the size of BZ. 3.0 million people live in it. Highest water: from January to February; lowest: from July to October. Its dams hold back little of its water (3.1% of a year's flow).
Where to start
- KaracabeyLargest city on its banks · 44,256 people
- Balıkesir Airport (BZI)Nearest airport with scheduled flights, 76 km from the cityCar hire at ISL airport (Istanbul)Discover Cars · Affiliate link↗
- From May to SeptemberThe best months to visit
Simav Brook, month by month
Highest water: from January to February
Lowest water: from July to October. Best months to visit: from May to September.
From about 58 m³/s in the lowest month to 540 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
Simav Brook: the basin in numbers
23,745 km² of land send their water to this river. This is what lives on it.
- 3.0millionpeople live in the basin
- 126/km²people per km²
- 640maverage altitude of the basin
- 727mmof rain a year (basin average)
- 12.0°Caverage air temperature
- 1.2%covered by lakes
- 0.2km³held in reservoirs
What covers the basin
- 20% Forest
- 27% Cropland
- 9% 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
Simav Brook: what you find on the way
- 2Weirs
From OpenStreetMap, within 2.0 km of the river. Not mapped is not the same as not there.
Cross-checked with our atlases
Simav Brook 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
1beach at the mouth or on the banksCoastya
4mountains at the sourcePeakyas
1island off the mouthIslandyas
Lakes and reservoirs (2)
Lakes it flows through, by Lakeyas
- Lake Uluabatkm 250118km²
- Dalyan Lakekm 2722.2km²
Lakeyas is coming soonOpen Lakeyas ↗
Beaches (1)
At the mouth (25 km) and on the banks, by Coastya
- Yeniköy Plaj11 km away24.4°C
Mountains at the source (4)
Within 15 km of the source, by Peakyas
- Ziyaret Tepe12 km away1,552m
- Darlıksivrisi Hill11 km away
- Büyükkır Hill9.4 km away
- Akdağ12 km away
Islands off the mouth (1)
Within 30 km of the mouth, by Islandyas
- İmralı16 km away13km²
Islandyas is coming soonOpen Islandyas ↗
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.
Tributaries
Where it flows, and what flows into it
Tributaries (2)
Also: Nilüfer Brook, Kocaçay River
Nearby
Rivers nearby
Where these numbers come from
| Name, length, places | Wikidata (Q3181444) · 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, Coastya, Peakyas, Islandyas — 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.