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Historic River Quality Objectives

• Published by: Environment Agency
• Last updated: 25 July 2025

This record is for Approval for Access product AfA164. The River Quality Objectives (RQO) classification was used for planning water quality improvements until 2006 when the scheme ended. RQOs were...

River Flood Maps (FRM_FH_RIVER_VELOCITY_DIRECTION_M)

• Published by: Scottish Government SpatialData.gov.scot
• Last updated: 07 November 2024

These maps have been produced to meet SEPA’s duty to publish flood hazard maps as set out in the Flood Risk Management (Scotland) Act 2009. The maps show where there is a risk of flooding from the...

River Flood Maps (FRM_FH_RIVER_VELOCITY_M_CC)

• Published by: Scottish Government SpatialData.gov.scot
• Last updated: 10 July 2024

These maps have been produced to meet SEPA’s duty to publish flood hazard maps as set out in the Flood Risk Management (Scotland) Act 2009. The maps show where there is a risk of flooding from the...

River Flood Maps (FRM_FH_RIVER_VELOCITY_DIRECTION_L)

• Published by: Scottish Government SpatialData.gov.scot
• Last updated: 10 July 2024

These maps have been produced to meet SEPA’s duty to publish flood hazard maps as set out in the Flood Risk Management (Scotland) Act 2009. The maps show where there is a risk of flooding from the...

River Flood Maps (FRM_FH_RIVER_VELOCITY_DIRECTION_H)

• Published by: Scottish Government SpatialData.gov.scot
• Last updated: 11 July 2024

These maps have been produced to meet SEPA’s duty to publish flood hazard maps as set out in the Flood Risk Management (Scotland) Act 2009. The maps show where there is a risk of flooding from the...

Digital elevation models of bed rock and land surface topography, river discharge data, and settings files for the CAESAR-Lisflood model following the Chamoli ice-debris flow, India, February 2021

• Published by: Environmental Information Data Centre
• Last updated: 21 January 2026

These data are input files for CAESAR-Lisflood (CL), a numerical hydrodynamic-landscape evolution model. These files were created to support coupled hydrodynamic-landscape evolution modelling to...

OSNI Open Data: River Basin LIDAR 2013 - DTMs and DSMs

• Published by: OpenDataNI
• Last updated: 25 April 2016

Terrain (DTM) & Surface (DSM) elevation models of river basins derived from airborne LIDAR survey systems. A Digital Terrain Model (DTM) is a digital file consisting of a grid of regularly...

OSNI Open Data: River Basin LIDAR 2014 - DTMs and DSMs

• Published by: OpenDataNI
• Last updated: 25 April 2016

Terrain (DTM) & Surface (DSM) elevation models of river basins derived from airborne LIDAR survey systems. A Digital Terrain Model (DTM) is a digital file consisting of a grid of regularly...

OSNI Open Data: River Basin LIDAR 2012 - DTMs and DSMs

• Published by: OpenDataNI
• Last updated: 25 April 2016

Terrain (DTM) & Surface (DSM) elevation models of river basins derived from airborne LIDAR survey systems. A Digital Terrain Model (DTM) is a digital file consisting of a grid of regularly...

OSNI Open Data: River Basin LIDAR 2010 - DTMs and DSMs

• Published by: OpenDataNI
• Last updated: 25 April 2016

Terrain (DTM) & Surface (DSM) elevation models of river basins derived from airborne LIDAR survey systems. A Digital Terrain Model (DTM) is a digital file consisting of a grid of regularly...

OSNI Open Data: River Basin LIDAR 2009 - DTMs and DSMs

• Published by: OpenDataNI
• Last updated: 25 April 2016

Terrain (DTM) & Surface (DSM) elevation models of river basins derived from airborne LIDAR survey systems. A Digital Terrain Model (DTM) is a digital file consisting of a grid of regularly...

OSNI Open Data: River Basin LIDAR 2008 - DTMs and DSMs

• Published by: OpenDataNI
• Last updated: 25 April 2016

Terrain (DTM) & Surface (DSM) elevation models of river basins derived from airborne LIDAR survey systems. A Digital Terrain Model (DTM) is a digital file consisting of a grid of regularly...

OSNI Open Data: River Basin LIDAR 2007 - DTMs and DSMs

• Published by: OpenDataNI
• Last updated: 25 April 2016

Terrain (DTM) & Surface (DSM) elevation models of river basins derived from airborne LIDAR survey systems. A Digital Terrain Model (DTM) is a digital file consisting of a grid of regularly...

OSNI Open Data: River Basin LIDAR 2004 - DTMs and DSMs

• Published by: OpenDataNI
• Last updated: 25 April 2016

Terrain (DTM) & Surface (DSM) elevation models of river basins derived from airborne LIDAR survey systems. A Digital Terrain Model (DTM) is a digital file consisting of a grid of regularly...

OSNI Open Data: River Basin LIDAR 2014 - DTMs and DSMs

• Published by: OpenDataNI
• Last updated: 16 December 2025

Terrain (DTM) & Surface (DSM) elevation models of river basins derived from airborne LIDAR survey systems. A Digital Terrain Model (DTM) is a digital file consisting of a grid of regularly...

OSNI Open Data: River Basin LIDAR 2008 - DTMs and DSMs

• Published by: OpenDataNI
• Last updated: 16 December 2025

Terrain (DTM) & Surface (DSM) elevation models of river basins derived from airborne LIDAR survey systems. A Digital Terrain Model (DTM) is a digital file consisting of a grid of...

OSNI Open Data: River Basin LIDAR 2004 - DTMs and DSMs

• Published by: OpenDataNI
• Last updated: 16 December 2025

Terrain (DTM) & Surface (DSM) elevation models of river basins derived from airborne LIDAR survey systems. A Digital Terrain Model (DTM) is a digital file consisting of a grid of...

OSNI Open Data: River Basin LIDAR 2007 - DTMs and DSMs

• Published by: OpenDataNI
• Last updated: 16 December 2025

Terrain (DTM) & Surface (DSM) elevation models of river basins derived from airborne LIDAR survey systems. A Digital Terrain Model (DTM) is a digital file consisting of a grid of...

OSNI Open Data: River Basin LIDAR 2013 - DTMs and DSMs

• Published by: OpenDataNI
• Last updated: 16 December 2025

Terrain (DTM) & Surface (DSM) elevation models of river basins derived from airborne LIDAR survey systems. A Digital Terrain Model (DTM) is a digital file consisting of a grid of...

OSNI Open Data: River Basin LIDAR 2010 - DTMs and DSMs

• Published by: OpenDataNI
• Last updated: 16 December 2025

Terrain (DTM) & Surface (DSM) elevation models of river basins derived from airborne LIDAR survey systems. A Digital Terrain Model (DTM) is a digital file consisting of a grid of...