Landsat Water Mask (QGIS Plugin)
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Adds a Processing Toolbox algorithm:
  Landsat Water Mask ▶ Landsat water mask (REFL / QA_PIXEL)

A guided, modern dialog (Raster → Conversion → Landsat Water Mask)
for a clean, beginner-friendly workflow.

Acceptable file inputs can be sourced from Earth Explorer.

1. Landsat Collection 2 Level-2
	⇒Landsat 8-9 OLI/TIRS C2 L2
	⇒Landsat 7 ETM+ C2 L2
	⇒Landsat 4-5 TM C2L2
		↪QA_PIXEL.TIF

2. Landsat Collection 2 Level-1
	⇒Landsat 8-9 OLI/TIRS C2 L1
	⇒Landsat 7 ETM+ C2 L1
	⇒Landsat 4-5 TM C2L1
		↪Full Resolution Browse (Reflective Color) GeoTIFF

refl.tif note:
  Water is detected via RBG thresholds.

QA_PIXEL.tif note:
  Water is detected using the QA_PIXEL integer value chosen per Landsat generation:
    - Landsat 4/5/7: 5504
    - Landsat 8/9:   21952
  (Detected from filename characters 3–4: 04, 05, 07, 08, 09.)

Outputs are Processing destinations (TEMPORARY_OUTPUT by default) and will be added back into QGIS.

Install from Plugin Store:
QGIS → Plugins → Manage and Install Plugins… → Install Plugin
	Else Install from Zip:
  	QGIS → Plugins → Manage and Install Plugins… → Install from ZIP
