Haller (river)

Biotope of Haller below the hair Bergs

The Haller is a 21 km long orographic left-hand or western tributary of the leash in the Hannover region and the district of Hildesheim, Lower Saxony, Germany.

Etymology

Spelling: Helere (. 10th-11th centuries ) By the year 1000 the location of the karst springs in the Deisterpforte in a boundary description of the diocese of Hildesheim was mentioned under the name Helereisprig. The Haller forms the border between the diocese of Hildesheim in the South and the Diocese of Minden in the north. The location of the karst springs was 1631 Haller Brunn, Brunn Haller 1783, 1896 and 1950 Haller Haller Brunn fountain. Of the Haller sources, the city was named Jump: to the 18th century it was called Haller Spring. Hans -Heinrich Seedorf suspects " that Haller means as much as noisily flowing stream. "

Geography

The two sources of Haller at the Deisterpforte on Raher mountain in the parcel at the game Brink at the height of 123.2 m above sea level. NN developed in a water reclamation system of water supply company Purena; the Purena is an associate company of E.ON Avacon. The Haller Fountain encourage spring water from the partly karstified Korallenoolith of Malm, supplemented by inflows from the approximately 15 m thick Quaternary unconsolidated rocks. The produced water is slightly alkaline, hard, and has increased carbonate hardness. The sources used for drinking water supply of the city Springe; its bed is about 0.5 million cubic meters per year. More built near wells temporarily affect the spring discharge, because they also take water from the groundwater body of Korallenoolith. The catchment area of ​​springs and wells extends approximately 3 km to the southeast in the Small Deister. The former source lake is gone, the sources are no longer visible. From the two wells only a little water is fed from a tube in the former bed of the Haller respectively.

In the second half of the eighteenth century there were around the Haller source an artfully designed landscape and garden tour, the then- bailiff F. Bussmann had created. At reminds him a hewn limestone with the inscription " SP. D. June 14, 1770. FB" which, according to Udo Mierau a stylized tree and several wells shows, which are interpreted in an announcement as horse and human foot of the devil. The writing is heavily weathered, because the stone is exposed to the flow of water on a slope, rain and frost. The " stylized tree " can also be interpreted as an arrow pointing to Haller source. This carved limestone is close to the Haller sources in the slope below the road where the water plant is located.

The Haller flows past by Jump and place as Alvesrode, Mittelrode, Haller castle and Adensen and empties into the district Wülfingen in the lanyard. It collects the waters of the eastern Deister, the northern Small Deister and northern Easter forest.

A sewage treatment plant of the city of Jump is in the field of Alferde marrow, where it leads the clarified water in the Haller one. At the Haller worked until the mid-20th century, the three water mills Alves Roder mill Hallermühle ( at Mittelrode ) and Rose mill ( at Adensen ). The Hallermühle is only used for power generation (as of 2008). From the field-names research, a fourth water mill on the Haller can tap into their mill building but no longer exists: the Gosemühle at Alferde. More water mills were on tributaries of Haller. In the Deisterpforte was a sawmill.

Geology

The Hallertal was originally a broad transverse valley of the Weser. The Deisterpforte opened the Weser then the way to the line, because that Hallertal flowed through in a period of one and a half million years of the Weser, until it was so covered with ice in the Elster glaciation 400,000 years ago, that the Weser is another way in direction of the Netherlands had to look. The bedrock beneath the valley Haller was born in the Middle and Lower Jurassic. It was amended by Weser run at the Deisterpforte to the height of 75 m above sea level. NN and before it joins the line up to the height of 70 m above sea level. NN removed.

To the east of the valley Haller solid rock of the Jurassic was intersected by the Limberg - thrust have been, postponed in the layers of the Triassic, which are rooted in layers of the Upper Buntsandstein of the layers of the Jura. The towering layers of lower Muschelkalk, Middle Muschelkalk, Upper Muschelkalk, Middle Keuper, Upper Keuper and Upper Bunter form between Bennigsen and Haller castle, the mountain ranges Limberg, Harberg, Abraham and Haller Burgerholzstrasse, the mountains called between Alferde and flours finie with stone bench (also Steinbrink ) and Limberg and north of Elze the Teufelsberg and the castle hill under the Poppenburg. In addition, there are towering layers of the Lower Buntsandstein and lower Muschelkalk at Marienberg and the Middle Buntsandstein of the Light, the east adjoins above Wülfingen to the finie. This mountain heights on the lower reaches of the valley Haller forced the Weser to leave the Hallertal between Adensen and Wülfingen. East of Adensen at the Haller Bridge the main road 3 then led the line into the Weser.

Little islands of hochragendem rock were surrounded by the Weser: Rock the Lias, on which the city is Eldagsen, and the distant hills in Eldagsen Sonneborn from Middle Keuper and at the height of Middle and Upper Keuper.

The glaciers of the Elster glacial period and the later Saale glaciation overlay the Hallertal and invited her there entrained debris from. Thus, the washed free of the Weser and later supplied covered with gravel Weser river bed has been spilled and placed 10 to 45 feet higher. In Drenthe stage of the Saale glacial hills arose between the new Gehlen Bach and the Wülfing Hauser mill creek. Cold northerly winds from the glaciers of the Vistula Glacial loess from offshore in layer thicknesses of 0.2 to 2 m, the transposed into the upper layers of soil to loam. Due to the fertile soil of the cleared and drained surfaces of Haller valley are characterized by agriculture; they belong to the Calenberger Lössbörde.

Memorial stone for the bailiff F. Bussmann at the Haller source

Mouth of a stream in the Haller

Haller at low tide on the B 3

The nature reserve Ziegeunerwäldchen

In earlier centuries, the then called Gypsy Roma and Sinti were not admitted to the nearby city Eldagsen and had to stay in the so-called Ziegeunerwäldchen, which was a wetland at the Haller broke and could not be used agriculturally.

The Lower Saxony Land Company acquired the nature reserve " Ziegeunerwäldchen " at the Haller for a surface pool. It was transferred to the club Biotope Management Initiative eV. For the upper reaches of Haller to the road Völksen - Eldagsen (K 214) there is already a plan. Now a water development plan for the underflow is to be installed from the K 214 to the confluence with the leash (as of 2007).

The nature reserve " Ziegeunerwäldchen " has the surface area 15.0 ha and the flag NSG HA 115 In the local survey says:

• " In the nature reserve in particular alder-ash riparian forest and alder-ash swamp forests occur in the wet channels of the lowlands of Haller ago. At the southeastern edge of the area willow riparian forest and willow swamp forest characterized by old tree willows and a high proportion of tree fungi on forest stands. Here you will also find quite a lot of lying and standing deadwood. Overall, the forests are characterized by a species-poor herb layer. on the northern edge shape old elm stocks the territory and open, marshy glades are characterized by extensive reed beds and large sedge. Moreover, there are in some areas single pond and grassland. "

The Regulation on the nature reserve " Ziegeunerwäldchen " in the town of Springe, Hanover County from 3 December 1986 called in § 2 as a protective purpose:

• " ( 1) The nature reserve " Ziegeunerwäldchen " consists mainly of a now unused, partially influenced by past forestry use and soil degradation, for the most part, however, near-natural forest remaining in the lowland area of ​​Haller. This forest is dominated by larger, largely unwooded wetland areas with reeds. It is surrounded of agricultural farmland and is characteristic of the lowland area of grassland. "
• " ( 2) The area should receive as undisturbed, coined by high groundwater levels habitat for vulnerable species or communities of wild plants or wildlife, be nurtured and developed. "

Recommendations for the restoration of Haller

The Haller is included " Priority 2 main waters" in the Lower Saxony watercourse protection system ( FGSS ) in the category.

The Wasserkörpenblatt WK 21051 Haller River in September 2012 includes the following recommendations:

• " The water body includes the lower reaches of Haller, as well as their tributaries Ohe and Wülfing homes mill creek. Conditions to achieve the required" good ecological status will be " relatively expensive ( Priority 2 ) with respect to the intact upper reaches of the Ohe, who for a the WK (water body ) high repopulation potential includes (current investigations from 2011). at the measuring point 48,852,622 of Haller Haller castle received the benthic invertebrates, the aquatic flora and Pisces, the value of level 4 ( unsatisfactory ). these results were the benthic invertebrates and fish in more recent studies confirmed. Overall, the biology of the WK is thus currently rated as " unsatisfactory". Haller is located within the water body as developed, begradigtes and deeply cut into the ground waters dar. the larger tributaries Ohe and Wülfing homes mill creek are over long distances expanded and straightened. place in the floodplain agricultural use often to the water's edge instead. The unsatisfactory evaluation result is primarily due to the structural deficits. The shade from riparian woodlands is patchy. Lack of riparian buffer strips also lead to diffuse material inputs from adjacent agricultural land. It was found a strong entry of sediments, the cause must be examined. Measures to wood development, the identification of sufficiently wide riparian strips and measures to reduce sediment input are recommended. Connected with the proposed measures to improve the running and development of the intrinsically dynamic water development is local and medium term to improve the biological community expected. The ecological continuity should be possible by a rear or reconstruction of the very high crash in the area of ​​Rosenmühle necessarily in order of to allow the connection above adjoining water bodies. "

Literature and Maps

• Bernd -Ulrich Kettner: river names in the current area of the top and middle rope. Series: Name and word band 6 Publisher evil C. Dahl, Rinteln 1972 pages 106 - 108.
• Collection field names and field names 1:10,000 map sheet 5/2 Alferde of the district of Hannover, Hannover 1986.
• Collection field names and field names 1:10,000 map sheet 5/3 Eldagsen of the district of Hannover, Hannover 1986.
• Collection field names and field names 1:10,000 map sheet 5/3 Gestorf of the district of Hannover, Hannover 1986.
• Collection field names and field names 1:10,000 map sheet 4/3 Jump east of the district of Hannover, Hannover 1982.
• Collection field names and field names 1:10,000 map sheet 3/3 Jump west of the district of Hannover, Hannover 1982.
• Wilhelm Kleeberg: Lower Saxon Mill history. Published by: Association for the Preservation of wind and water mills in Lower Saxony eV, Hannover. Bösmann, Detmold 1964 and Schlütersche, Hannover 1979.