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Generalised hydrogeological map of Lower Saxony, 1 : 500 000 - Groundwater quality - pH   (HUEK500GWB_PH)

The generalised hydrogeological map of Lower Saxony, 1 : 500 000 - Groundwater quality: pH, shows the evaluation of a representative sample of pH values taken from the LBEG laboratory database. The data collected in the period 1967-2000 were averaged twice. Where groundwater monitoring wells were subject to multiple analyses, the averages of the available analysis results were formed. In addition, the data from all sampling wells in a 2000 m radius were averaged again.

pH values which are obviously caused by point-source anthropogenic inputs (e.g. abandoned landfills), are not included in these generalised maps. The pH values are shown in depth stages without reference to the local hydrogeological situation. The data therefore cannot be compared without taking the respective hydrogeological situation into consideration (e.g hydrogeological layering), nor can the data be adopted for detailed investigations.

The pH values shown in the generalised map lie in a range between 3.3 and 8.8 (median = 6.7). Very low pH values between 3.5 and 5.5 are primarily encountered in the groundwater of moor areas (e.g. Vehnemoor south-west of Oldenburg, Lichtemoor north-east of Nienburg or Wietingsmoor west of Sulingen). In lime-free rocks in which silicates and alumosilicates primarily determine groundwater quality, pH values between 5 and 6 are reached (e.g. Lüneburger Heide and Solling). The dissolution of carbonates leads to pH values increased to 7.5-8.5.

Additional documents

Informations about data

Deutschland Übersichtskarte mit Position
 
Aktuelle Position

  • Editing state: Erfassung bzw. Erstellung der Daten ist abgeschlossen (completed).
  • Date of last publication: 01.06.2008
  • Information about data origin:

    An Datengrundlagen sind eingegangen:

    - Daten des NIBIS, einzelner Wasserversorger und des Niedersächsischen Landesbetriebs für Wasserwirtschaft, Küsten- und Naturschutz (NLWKN), Stand: März 2000

Contact person

Phone:   +49 (0)511-643-3613
Fax:   +49 (0)511-643-533613

Organisation:
Landesamt für Bergbau, Energie und Geologie (LBEG)
Stilleweg 2
30655  Hannover (Niedersachsen)
Deutschland
Fon: +49 (0)511-643-0
Fax: +49 (0)511-643-2304
Email:
Web: http://www.lbeg.niedersachsen.de/


Online access to data

To access the data online you can use the following applications/services:

Distribution information

Common informations (order proccess, product choise, prices):

NIBIS-Preisliste, AGB, Vergütungsverzeichnis für Leistungen des LBEG, Bestellhinweise (https://www.lbeg.niedersachsen.de/portal/live.php?navigation_id=613&article_id=905&_psmand=4); Produktkatalog des LBEG (https://www.lbeg.niedersachsen.de/download/1238)

Data formats

  • ArcGIS-Shapefile  ( Version:   inapplicable)
  • JPEG  ( Version:   inapplicable)
  • PDF  ( Version:   inapplicable)
  • TIFF  ( Version:   inapplicable)

Data medium

  • CD-ROM (cdRom)
  • Ausdruck (hardcopy)
  • DVD (dvd)

Distribution contact

Phone:   +49 (0)511-643-3354
Fax:   +49 (0)511-643-533354

Organisation:
Landesamt für Bergbau, Energie und Geologie (LBEG)
Stilleweg 2
30655  Hannover (Niedersachsen)
Deutschland
Fon: +49 (0)511-643-0
Fax: +49 (0)511-643-2304
Email:
Web: http://www.lbeg.niedersachsen.de/


Additional information about the data

  • Format of data: digitale Karte in Raster- oder Vektorform (mapDigital)
  • Topic: Geowissenschaften (geoscientificInformation)
  • Key words: NIBIS-Metadaten, inspireidentifiziert, sgd_Hydrogeologie
  • Key words GEMET: Geology
  • Thesaurus name: GEMET - INSPIRE themes, version 1.0
  • Thesaurus date of puplication: 2008-06-01
  • Geometry type: Punkt (point)
  • Scale: 1:500000
  • Coordinate system: 4647; ETRS89 / UTM zone 32N (zE-N) (Europäisches Terrestrisches Referenzsystem von 1989 / Universale Transversale Mercatorabbildung Zone 32N)
  • Altitude reference system: DE_DHHN92_NH
  • Reference layer: Datenbestand (dataset )
  • Language: ger
  • Character set: utf8

Access- and security restrictions

  • Security classification: unbeschränkt (unclassified)
  • Access restriction: Urheberrecht (copyright)
  • Restriction of application: Allgemeine Geschäftsbedingungen -AGB- des Landesamtes für Bergbau, Energie und Geologie (LBEG) und die Anlage Vergütungsverzeichnis für Leistungen des LBEG

Information about content (auto detected)

  • Amount datasets/features: 2325
  • Spacial notation: vector
  • Eastern longitude: 6.5475   to   11.7416
  • Northern latitude: 51.225   to   53.9343

*1EPSG codes are used to combine transformation parameters.   More information  ...

About this data description

  • Metadata standard: Standard   ISO 19115 ,  version   ISO 19115:2003/Cor. 1:2006 (E)
  • Metadata status: 05.09.2022
  • Metadata language: ger
  • Metadata character code: utf8

Metadata contact

Organisation:
Landesamt für Bergbau, Energie und Geologie (LBEG)
Stilleweg 2
30655  Hannover (Niedersachsen)
Deutschland
Fon: +49 (0)511-643-0
Fax: +49 (0)511-643-2304
Email:
Web: http://www.lbeg.niedersachsen.de/