Environmental baseline mapping · Kwara State

Baseline Survey and Mapping of Project Sites in Kwara State

Terrain, hydrology, thirty-year land-cover change, vegetation, climate and field evidence integrated across the Asadam, Lata and Share project sites.

Land-use and land-cover evidence prepared for the Asadam project site
Duration
2025
Client
Kwara State ACReSAL
Study area
Asadam, Lata and Share sites, Kwara State, Nigeria
Role
GIS Analyst

Project objective

Establish defensible environmental baselines for project planning.

The assignment characterised three project sites using satellite imagery, terrain models, field observations and environmental datasets. It established comparable evidence on landscape condition, hydrology, land transformation, vegetation, climate and environmental sensitivity.

3Project sites assessed
30 yearsLand-cover change period
1995–2025Comparative LULC analysis
1Integrated baseline framework

My contribution

Integrating terrain, environment and field observations.

My role covered baseline spatial analysis, field-data preparation, map production and the interpretation of change across the three sites.

01

Site characterisation

Integrated satellite imagery, DEMs and field-collected geospatial data for each project site.

02

Terrain and hydrology

Produced topographic, drainage and hydrological maps supporting flood-risk assessment.

03

Land-cover change

Classified LULC for 1995–2025 and quantified transformation trends.

04

Vegetation condition

Applied multi-year NDVI analysis to assess vegetation health and ecosystem condition.

05

Environmental baseline

Mapped geology, soils, erosion, biodiversity and natural resources.

06

Climate integration

Incorporated rainfall, temperature trends and projections into the spatial assessment.

Spatial workflow

A consistent baseline across three sites.

  1. 01
    Assemble

    Prepare satellite, terrain, climate, environmental and field datasets.

  2. 02
    Characterise

    Map topography, drainage, soils, geology and environmental features.

  3. 03
    Compare

    Evaluate LULC and vegetation change across multiple years.

  4. 04
    Validate

    Georeference and check spatial findings against field observations.

  5. 05
    Report

    Produce maps, figures and datasets for the technical baseline reports.

Project gallery

Comparative land-cover evidence across the study sites.

Outputs and value

Evidence ready for design, safeguards and planning.

The baseline studies provided spatially consistent evidence for site understanding, technical reporting and subsequent project decisions.

  • Topographic, drainage and hydrological maps
  • LULC classifications and 1995–2025 change analysis
  • Multi-year NDVI and ecosystem-condition evidence
  • Geology, soils, erosion, biodiversity and natural-resource maps
  • Climate trends and projection layers
  • Field-validated spatial datasets and report-ready figures

Project attribution: Completed for Kwara State ACReSAL as part of a multidisciplinary baseline assignment. This page describes Samuel Bahago Gabriel's GIS contribution.

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