Brandenberger Ache
Brandenberger Ache in Kramsach
The Kaiserklamm
The Brandenberger Ache is a 22 km long left tributary of the Inn in the Tyrolean lowlands. It breaks the Northern Limestone Alps in several ravines, which are a valuable habitat for many animal and plant species, and has been declared a natural monument.
- 4.1 Holztrift
- 4.2 whitewater sports
- 4.3 power plant plans
Running and landscape
The Brandenberger Ache receives water from various streams of Brandenberger Alps and the Mangfall mountains in Bavaria. The expense from the red and white Valepp river is called from the German -Austrian border Grundache and after the confluence with the Marchbach at the Archduke - Johann -Klause to the Brandenberger Ache, who are still with the Bairache, the Weißache, the Ellbach ( when Imperial House ) and the Steinberger Ache united. Then flows past below the village of Brandenberg and flows Kramsach in the Inn.
The running of the Brandenberger Ache time is rare: While other rivers such as the River Isar, the Rißbach that Duerrach or the Ache rise in the Alps and north flow to the edge of the Alps, it takes the opposite route from north to south and cuts through the Northern Limestone Alps back to the Inn. It thus breaks through the running east -west ridges in several deeply incised canyons, alternating with basin-like extensions. In the Kaiserklamm north of Brandenberg it breaches the Wettersteinkalk and in the Tiefenbachklamm before Kramsach the main dolomite.
The length of the Brandenberger Ache is regarded as including the headwaters of the Red Valepp 33.1 km, from the confluence of the Red and White Valepp 27.7 km (of which 26.5 km Tyrolean area ), and from the confluence of Grundache and Marchbach 23, 6 km.
Catchment and water management
The Brandenberger Ache drains a catchment area of 282.1 km ², its highest point, the Hochiss with 2299 m above sea level. A. is.
The average discharge at the level Mariathal, less than 3 km upstream of the mouth, is 10.4 m³ / s, which corresponds to a runoff of 38.2 l / s · km ². The Brandenberger Ache has a nivales flow regime with a moderate amplitude. The average discharge is 16.2 m³ / s approximately three times higher than in the most arid month of January in the water-rich month of May with 5.26 m³ / s
Ecology
The gorges of the Brandenberger Ache are a valuable habitat for many animal and plant species. 1988, the river was declared a natural monument.
Flora
In the riparian areas in places grows a narrow strip of riparian trees and shrubs that are adapted to periodic flooding, as gray alder ooder pastures. It is followed by a mainly of spruce, beech and fir forest on gorge formed, on exposed areas, such as rocky overhangs, there are also yew. In the shady areas ferns, including the rare deer tongue, orchids such as the Twayblade and lily plants such as Turk's cap lily, lily of the valley or True Solomon's Seal occur. There are already partly alpine plant species such as mountain avens, Stemless gentian, flower ball, or Gämskresse Alps Butterwort On the cliffs above the canyon forests.
Fauna
Along the Brandenberger Ache, there are numerous species of birds, which are particularly adapted to life in the moist ravines, including Dipper, Grey Wagtail and wall creepers.
One of the main fish species include brown trout, grayling and Koppe. Mostly there are also eels, which were originally used in the Spitzingsee and with a flood migrated downstream. The fishery shall be operated in accordance with an old hunting law dating back to 1434 from the Brandenberger population.
Water quality
The occurrence of different types of algae and many invertebrates such as flatworms, nudibranchs, amphipods, insect larvae and water beetles, is an indicator of a clean body of water. The Brandenberger Ache has Tyrolean area by walking on water quality class I-II.
Use
Holztrift
Due to the forest wealth of the Brandenberger Valley and its side valleys, the Brandenberger Ache has been used for centuries for timber rafting, the earliest records date from the year 1412. The wood used as firewood in the iron and steel works in Brixlegg, where silver and copper were mined and processed. Artificial weirs, formerly the Imperial Hermitage in Valepp, from 1833, the Archduke - Johann -Klause dammed up the water that was released at a stroke and ripped the tree trunks with it. In Kramsach the wood was collected by a rake and pulled at the wooden border on land. Every year, as up to 35,000 cubic meters of wood were transported to the Inn valley. The Holztrift was set in 1966, the partially carved into the rock Triftsteig is still preserved.
White water sports
The 1 km long Kaiserklamm is by kayak riders as challenging whitewater popular (WW IV to V). The Ache is passable with sufficient levels of the state border to Kramsach.
Power plant plans
In the 1970s, the city of Kufstein plans to use the Brandenberger Ache for energy pursued. The river would have it jammed at Brandberg and the water are passed in a pressure tunnel through the Voldöppberg to the power plant in the Inn Valley. Strong protests by the population in Kramsach and Brandenberg led to the plans from 1987 were not pursued further.