Identification

Title

Map of runoff risk (partial cover)

Alternative title(s)

Abstract

The map shows the risk of water flowing overland (runoff) carrying potential pollutants into water courses. This map primarily covers the cultivated land in Scotland. The digital dataset gives information on the likelihood of a potential pollutant applied to the soil surface running off the land to a water course in 3 classes: Low, Moderate or High and is based on fundamental soil characteristics such as depth to a slowly permeable layer, soil porosity and flow pathways through the soil.

Resource type

dataset

Resource locator

http://www.hutton.ac.uk/learning/natural-resource-datasets/soilshutton/soils-maps-scotland/download

Unique resource identifier

code

None

codeSpace

Dataset language

eng

Spatial reference system

authority code

code identifying the spatial reference system

urn:ogc:def:crs:EPSG:27700

Additional information source

Classification of spatial data and services

Topic category

farming

geoscientificInformation

Keywords

Keyword set

keyword value

runoff

Keyword set

keyword value

Soil

originating controlled vocabulary

title

reference date

date type

publication

effective date

2008-06-01

Geographic location

West bounding longitude

-5.20

East bounding longitude

-1.70

North bounding latitude

58.70

South bounding latitude

54.60

Extent

Extent group

authority code

code identifying the extent

Vertical extent information

Minimum value

-100000.00

Maximum value

900719825474.10

Coordinate reference system

authority code

code identifying the coordinate reference system

Temporal reference

Temporal extent

Begin position

2018-04-19

End position

2018-04-19

Dataset reference date

date type

publication

effective date

2018-04-19

date type

creation

effective date

2018-04-19

date type

revision

effective date

2018-04-19

Frequency of update

notPlanned

Quality and validity

Lineage

The risk of runoff depends on how easily water can drain away from the soil surface. It also depends on how much water the soil can store. These in turn depend on fundamental soil characteristics such as soil porosity and flow pathways through the soil. Each of the soils in the Soil Map of Scotland (partial cover) dataset was first allocated to one of 29 Hydrology of Soil Type (HOST) classes and then the Standard Percentage Runoff for these classes was determined from Boorman et al. (1995). These runoff values were then allocated to one of 3 classes that reflected the likelihood of a soil becoming saturated leading to water flowing over the land. The three classes, Low, Moderate or High, equate to less than 20, 20 to 40 and more than 40 percent runoff. Where the soil map units were described as complexes (that is, more than one soil type if found in a soil map unit), the precautionary principle was applied and the soil at most risk of generating runoff was used to describe the whole map unit. Boorman, D.B., Hollis, J.M and Lilly, A. 1995. Hydrology of soil types: a hydrologically-based classification of the soils of the United Kingdom. Institute of Hydrology Report No.126. Institute of Hydrology, Wallingford. Lilly, A & Baggaley, N.J. 2014. Developing simple indicators to assess the role of soils in determining risks to water quality, CREW project number CD2012_42.

Conformity

Data format

name of format

Esri shapefile

version of format

10

Constraints related to access and use

Constraint set

Use constraints

Copyright

Constraint set

Limitations on public access

No limitations on public access

Responsible organisations

Responsible party

contact position

Principal Soil Scientist

organisation name

The James Hutton Institute

full postal address

Craigiebuckler

Aberdeen

email address

soils@hutton.ac.uk

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

contact position

Principal Soil Scientist

organisation name

The James Hutton Institute

full postal address

Craigiebuckler

Aberdeen

email address

soils@hutton.ac.uk

responsible party role

pointOfContact

Metadata date

2021-07-19

Metadata language