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of the Kleine Aller as variable. The values for organic pollution, nitrate, ammonium and phosphate contamination vary from lightly polluted to very heavily polluted. Ammonium levels in particular suffer from wide variations and sometimes high values. This is due to the fact that the waterway receives
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Kleine Aller was straightened and canalised in 1865 along almosts its entire length. The river bed was also raised. The changes to the river and the lack of flooding has enabled the land in the valley depression of the Kleine Aller to be used as farmland.
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The sections near Tülau, Bergefeld and
Tiddische have been renaturalised and, in places, a new river channel has been dug out. The near-natural areas thus created have been planted with
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has become established. In earlier times the valley was only used as grassland due to frequent flooding; today the river meadows are mainly used for arable farming. The old
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The Kleine Aller has been able to carve out a valley during the course of its existence which, in its middle reaches, is about 10 m deep and about 1,000 m wide in which a
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Near
Warmenau there has been a water quality station since 1967, where water quality has been regularly tested since 1976. The 2004 Lower Saxon
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258:. From Jembke it forms the border between the district of Gifhorn and the city of Wolfsburg. The river also passes Wolfsburg-
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the valley of the Kleine Aller created a natural, north-south oriented border between two regions. These were the
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at a height of 55.5 m above sea level and at a point a few hundred metres after it branches away from the River
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Umweltkartendienst des
Niedersächsischen Ministeriums für Umwelt, Energie und Klimaschutz
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and that the nitrogen content in these installations has not been reduced sufficiently.
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The river channel was formed, like the surrounding landscape, in the penultimate
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Water quality report on the Aller / Quelle 2004 by the State of Lower Saxony
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301:. The streams acted as drainage channels for the higher lying areas of
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297:. The ice sheets shaped the terrain over 100,000 years ago with their
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410:Kleine Aller Water Quality Report by the NLWKN
323:in the west and the historic landscape of the
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395:Environmental map service of Lower Saxony (
33:The Kleine Aller where it passes under the
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182:Route of the Kleine Aller west of the
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262:and Wolfsburg-Warmenau to enter the
440:Tributaries of the Aller (Germany)
222:village of Wiswedel at 78 m above
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149:144 km (56 sq mi)
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374:List of rivers of Lower Saxony
218:The Kleine Aller rises in the
100: • coordinates
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72:Physical characteristics
141:22.9 km (14.2 mi)
88: • location
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360:the discharge from five
198:in the German state of
445:Rivers of Lower Saxony
355:assesses the chemical
194:is a tributary of the
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285:Formation and history
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353:water quality report
154:Basin features
122:52.4508°N 10.7303°E
118: /
455:Gifhorn (district)
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186:. 18th century map
460:Rivers of Germany
325:Vorsfelder Werder
254:, Hoitlingen and
184:Vorsfelder Werder
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295:Saale glaciation
226:. It drains the
206:and the city of
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16:River in Germany
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418:External links
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321:Boldecker Land
310:glacial valley
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347:Water quality
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200:Lower Saxony
192:Kleine Aller
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66:Lower Saxony
22:Kleine Aller
426:(pdf, 1 MB)
317:Middle Ages
264:Aller Canal
228:Kiebitzmoor
159:Progression
125: /
434:Categories
380:References
340:meandering
260:Brackstedt
146:Basin size
113:10°43′49″E
110:52°27′03″N
450:Wolfsburg
332:eutrophic
268:Weyhausen
266:south of
252:Tiddische
238:north of
236:Vogelmoor
224:sea level
208:Wolfsburg
171:North Sea
41:-Warmenau
39:Wolfsburg
368:See also
274:itself.
248:Barwedel
240:Barwedel
230:west of
47:Location
315:In the
305:in the
291:ice age
204:Gifhorn
56:Germany
52:Country
293:, the
256:Jembke
214:Course
138:Length
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334:peat
307:Aller
303:geest
279:alder
272:Aller
232:Tülau
220:Brome
196:Aller
167:Weser
163:Aller
93:Aller
78:Mouth
62:State
37:near
190:The
35:B188
336:fen
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387:^
312:.
250:,
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169:→
165:→
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