River
Amper
185 km from source to mouth · Germany.
GermanyFlows into Isar
In numbers
Length
185km
Average flow
45m³/s
Basin
3,100km²
Drop
432m
from 839 m to 407 m
Country
1
The journey
From source to mouth
185 km of river and 42 stops on the way: 25 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmBavarian Alpsat 839 m
- 5 kmOberammergau5,344 people
- 10 kmSchleifmühlklamm
- 16 kmKraftwerk Kammerl
- 18 kmSchleierfälle
- 23 kmEchelsbacher Brücke
- 43 kmPeißenberg13,148 people
- 45 kmAchtributary
- 49 kmPolling3,228 people
- 54 kmWeilheim23,378 people
- 75 kmUtting am Ammersee3,983 people
- 79 kmSchondorf am Ammersee3,877 people
- 81 kmAmmersee45 km²
- 82 kmInning am Ammersee4,111 people
- 82 kmWindachtributary
- 88 kmGrafrath3,630 people
- 92 kmAmperkraftwerk (Schöngeising)
- 99 kmAmperbrücke
- 99 kmFürstenfeldbruck37,666 people
- 102 kmEmmering6,081 people
- 102 kmEichenau11,637 people
- 105 kmStarzelbachtributary
- 106 kmOlching23,978 people
- 108 kmGröbenzell19,110 people
- 112 kmBergkirchen6,955 people
- 114 kmGröbenbachtributary
- 114 kmMaisachtributary
- 118 kmDachau47,461 people
- 122 kmWürmtributary
- 122 kmHebertshausen5,121 people
- 131 kmHaimhausen4,680 people
- 135 kmFahrenzhausen4,466 people
- 140 kmThurnsberg42 people
- 145 kmWasserkraftwerk Kranzberg
- 146 kmGlonntributary
- 147 kmAllershausen4,734 people
- 161 kmZolling4,029 people
- 167 kmLangenbach3,755 people
- 176 kmMoosburg an der Isar20,107 people
- 177 kmMoosburg17,363 people
- 183 kmBruckberg5,071 people
- 184 kmAusgleichweiher1.3 km²
- 184 kmIsar-Stromschnelle Sieben Rippen bei Bruckbergerau
- 185 kmIsarat 407 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River in Germany
At the mouth it carries 45 m³/s on average: an Olympic pool every 56 seconds. It drops from 839 m to 407 m, 2.3 m per kilometre on average. Its basin covers 3,100 km², about the size of LU. 2.6 million people live in it. Highest water: from April to May; lowest: from December to February. Its dams hold back little of its water (2.3% of a year's flow).
Where to start
- DachauLargest city on its banks · 47,461 people
- Munich Airport (MUC)Nearest airport with scheduled flights, 28 km from the cityCar hire at MUC airport (Munich)Discover Cars · Affiliate link↗
- On the water32 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
- Kayak and canoe9 put-ins and rapids mapped (OpenStreetMap)
- From June to SeptemberThe best months to visit
Amper, month by month
Highest water: from April to May
Lowest water: from December to February. Best months to visit: from June to September.
From about 96 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
Amper: the basin in numbers
7,100 km² of land send their water to this river. This is what lives on it.
- 2.6millionpeople live in the basin
- 363/km²people per km²
- 816maverage altitude of the basin
- 974mmof rain a year (basin average)
- 6.9°Caverage air temperature
- 36%protected areas
- 2.2%covered by lakes
- 0.1km³held in reservoirs
What covers the basin
- 59% Forest
- 19% Cropland
- 19% Pasture
- 13% 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
Amper: what you find on the way
- 93WeirsAmmerstauwehr, Kammerl, Schnalzwehr and 90 more
- 12WaterfallsSchleierfälle, Sinterterrassen, Wasserfall in der Reitnerbachklamm and 9 more
- 5RapidsScheibum, Naturstufe and 3 more
- 4Canoe put-ins
- 11Boat rampsSegler-Gemeinschaft Utting e.V. and 10 more
- 8Ferry piersDießen, Riederau, Holzhausen and 5 more
- 9MarinasMTV Dießen, Dießner-Segel-Club e.V., Segelclub Landsberg e. V. and 6 more
- 17River beachesHundebadeplatz, Badeplatz Lugenauer See, Polizeibad and 14 more
From OpenStreetMap, within 1.7 km of the river. Not mapped is not the same as not there.
Cross-checked with our atlases
Amper 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.
3waterfalls on the riverCascadyas
2lakes on its wayLakeyas
237mountains at the sourcePeakyas
Waterfalls (3)
On the river, by Cascadyas
- Schleifmühlklammkm 9
- Schleierfällekm 17
- Isar-Stromschnelle Sieben Rippen bei Bruckbergeraukm 175
Cascadyas is coming soonOpen Cascadyas ↗
Lakes and reservoirs (2)
Lakes it flows through, by Lakeyas
- Ammerseekm 77 · 81 m deep45km²
- Ausgleichweiherkm 1751.3km²
Lakeyas is coming soonOpen Lakeyas ↗
Mountains at the source (237)
Within 15 km of the source, by Peakyas
- Waxenstein14 km away · prominence 116 m2,277m
- Krottenkopf11 km away · prominence 1,156 m2,086m
- Geierköpfe14 km away2,161m
- Kreuzspitze11 km away · prominence 1,182 m2,185m
- Friederspitz8.9 km away2,049m
- Höllentorkopf14 km away2,150m
- Kramerspitz6.9 km away · prominence 780 m1,985m
- Osterfelderkopf14 km away2,057m
229 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
Amper in pictures
Tributaries
Where it flows, and what flows into it
It flows into
IsarTributaries (14)
Also: Würm, Ach, Maisach, Glonn, Windach, Linder, Gröbenbach, Kalterbach, Schwebelbach, Große Laine, Starzelbach, Talbach, Kolbenbach, Angerbach
Nearby
Rivers nearby
Where these numbers come from
| Name, length, places | Wikidata (Q166301) · 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 | Cascadyas, 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.



