HK 50 — Hydrogeological Map of North Rhine-Westphalia 1: 50.000

The leaves of the Hydrogeological Map [HK 50] of North Rhine-Westphalia in scale 1: 50 000 show distribution, location and rock characteristics of the aquifers and low ladders found in the leaf area. In the main maps, loose rocks and fixed rocks are assigned to different permeability classes according to their hydraulic properties, and the width of the usable groundwater space is also reflected in the looser rock. The maps also contain information on the location of springs, wells, groundwater measuring stations and potential groundwater hazards (excavations, deposits). Hydrogeological cutting series give an impression about the storage, thickness and hydraulic connections of the hydrogeological units. In newer leaves, another map shows the spread and composition of overlapping top layers and their protective function for groundwater, the risk of substance input into groundwater is classified. Information on the geogenic groundwater quality is also provided here. Secondary maps (e.g. geological overview, quaternary basis and permeability of surface layers, groundwater analyses or basics of processing) are partly included. The construction of the groundwater surface — also shown on a side map — is based on digital data from the State Environment Agency North Rhine-Westphalia (LUA), Essen. Additional information on groundwater levels and water protected areas can be obtained there. In some cases, short explanations with a list of fonts are included in the map sheets, which focus on the content and presentation of the maps, as well as the groundwater guidance and openness of the layers found in the leaf area. Publications: Hydrogeological map 1: 50,000 sheets, year of publication L 3708 Gronau (Westf.), 1993 as print [with Kurzerl.] L 3710 Rheine, 1983 as print [with Kurzerl.] L 3712 Ibbenbüren, 2001 as print, as plot (also digital) L 3906 Vreden, 1982 as print L 3908 Ahaus, 1981 as print L 3910 Steinfurt, 1997 as print (also digital) L 3912 Lengerich, 1996 as print (also digital) L 3914 Bad Iburg 2006 as print, as plot (also digital) L 3918 Herford, 1984 as print [with short] L 4116 Gütersloh, 2000 as print, as plot (also digital) L 4118 Detmold, 1987 as print [with Kurzerl.] L 4314 Beckum, 1999 as print (also digital) L 4316 Lippstadt 2006 as print, as plot (also digital) L 4318 Paderborn, 1984 as print [with Kurzerl.] L 4514 Soest, 2003 as print, as plot (also digital) L 5110 Waldbröl, 1985 as print