Flood retention basin Krumme-Grund I

Flood retention basin Krumme-Grund I
	Dam and reservoir
Location:	North Rhine-Westphalia
Tributaries:	Crooked reason
Larger places on the shore:	Paderborn
	North Rhine-Westphalia , Germany
Coordinates	51 ° 42 '42 " N , 8 ° 47' 16" E Coordinates: 51 ° 42 '42 " N , 8 ° 47' 16" E
	Data on the structure
Construction time:	1972 - 1974/75
Height above valley floor:	17 m
Height above foundation level :	18 m
Height of the structure crown:	161.0 m
Building volume:	210,000 m³
Crown length:	300 m
Crown width:	15 m
Slope slope on the air side :	1: 2
Slope slope on the water side :	1: 2; 1: 2.5
	Data on the reservoir
Altitude (at congestion destination )	159.0 m
Water surface	12.4 ha
Storage space	0.65 million m³
Total storage space :	0.76 million m³
Catchment area	17 km²
Design flood :	34.50 m³ / s

The flood retention basin Krumme Grund I or Liethstaudamm is a flood retention basin on the river Krumme Grund (or Krumme-Grund-Bach), a tributary of the Pader in the catchment area of the Lippe . It is operated by the Upper Lippe Water Association. The so-called “Green Basin” without permanent traffic jams is located in the urban area of Paderborn in North Rhine-Westphalia .

The building material for the dam was patio gravel and stony loam. The seal consists of a clay core with an injection veil in the bedrock.

A road leads over the dam. There is a recreational area in the storage area.

There is a second, smaller dam "Krumme Basic II" a little further below the same waters at 51 ° 42 '53 " N , 8 ° 47' 0" O . 51.714666 8.783205

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