Gronau

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Gronau flows into Pinnau , which it joins at N 53° 45′ 7″, E 9° 53′ 32″ at OSM node n243781354, and there 50 km of total upstream flows in. load it's distributaries

Gronau has 4 tributaries.

• Krumbek, which joins it at N 53° 44′ 57″, E 9° 54′ 32″ at OSM node n310193964, and 4 km of total upstream flows in.
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• Heidmoorgraben, which joins it at N 53° 44′ 14″, E 9° 55′ 24″ at OSM node n243781289, and 2 km of total upstream flows in.
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• (unnamed), which joins it at N 53° 44′ 1″, E 9° 56′ 23″ at OSM node n310069761, and 805 m of total upstream flows in.
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• (unnamed), which joins it at N 53° 44′ 33″, E 9° 55′ 13″ at OSM node n273404131, and 362 m of total upstream flows in.
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