Nile Gauging Station Site Selection

Project Overview

A critical transboundary water monitoring project tasked with identifying optimal locations for 12 new hydrological gauging stations along the 400 km Nile reach from Dal Cataract to the Egyptian border. The selection framework combined multi-source DEM analysis (SRTM 30 m, TanDEM-X 12 m), hydraulic stability criteria, and logistical accessibility scoring. Final site selection was validated against historical discharge records from existing HRC Sudan gauging network and cross-checked with Egyptian Water Ministry requirements for bilateral data sharing.

Methodology

1. 01Multi-criteria GIS spatial analysis using weighted overlay for site suitability scoring
2. 02SRTM and TanDEM-X DEM hydrological conditioning and channel network extraction
3. 03HEC-RAS 1D hydraulic modeling for channel stability assessment at candidate sites
4. 04Sentinel-1 SAR backscatter analysis for bank erosion risk detection
5. 05GPS-RTK field reconnaissance surveys at 28 candidate locations
6. 06AutoCAD Civil 3D cross-section profiles and benchmark establishment

Key Outputs

• 12 priority gauging site recommendations with full technical justification
• Hydraulic stability assessment report for each selected location
• GPS benchmark and cross-section survey data package
• Bilateral monitoring protocol draft shared with Egyptian Water Authority

12 priority gauging sites identified across 400 km reach