Copernicus Global Land Service — Lake Water Quality (LWQ300 / LWQ100)

Copernicus Land Monitoring Service

Specification

Code: AL09
Reliability: A Reliable
Variables delivered: Turbidity, chlorophyll-a (trophic state index), reflectance — for LAKES specifically
Resolution: 300 m (LWQ300) / 100 m (LWQ100)
Cadence: 10-day composite
Coverage: 2016 (LWQ300) → present
Cost: FREE
Login required: Free CGLS registration
Latency: ~10-20 days
CSV direct?: Manual / scripted download → convert

Applicability by site

Chakaria HDSS PARTIAL Rural COASTAL

CHECK COVERAGE — coastal lagoons may be excluded

Matlab HDSS PARTIAL Rural riverine

CHECK COVERAGE — depends on the lake mask

Dhaka City PARTIAL Urban inland

CHECK COVERAGE — Dhaka's lakes may be too small for the 300 m mask

Access

Route: HTTP download · CGLS portal
Endpoint / asset ID: land.copernicus.eu/global/products/lwq
Pipeline step: 2 Download
Documentation: https://land.copernicus.eu/global/products/lwq

No automated route. This source is fetched manually: (manual - CGLS portal).

What to watch for

VALIDATION STATUS

Operational Copernicus service with a documented validation report

KNOWN LIMITATION

Uses a FIXED global lake mask — you must confirm your specific water bodies are in it before relying on this. Likely excludes Dhaka's small urban lakes.