Kullu Valley: The Beas Drainage System

Wed, 25 Feb 2026 12:00:00 +0100

The Kullu district expansion zooms out from the Parvati Valley to encompass the full Beas River drainage system — from Aut (1100 m) at the valley mouth to the Lahaul/Chenab divide (3080 m+) beyond Rohtang Pass. This is the geographic context within which the Parvati Valley sits.

Geographic Extent

Bounding box: 31.40–32.70°N, 76.80–78.00°E (~145 × 113 km)
SRTM tiles: 4 (2×2 grid: N31E076, N31E077, N32E076, N32E077)
Elevation range: ~800 m (Aut gorge) to 6632 m (Parbati Parbat)

River System

The Beas and its tributaries carve the district:

Mesh Generation: From Elevation to Geometry

Wed, 25 Feb 2026 12:00:00 +0100

A digital elevation model is a grid of numbers. A mesh is geometry that can be rotated, lit, textured, and explored. This stage transforms SRTM grids into OBJ meshes with UV-mapped satellite textures — ready for import into Blender or any 3D application.

Mesh Products

Name	Extent	Resolution	Vertices	Texture
Peak	Parbati Parbat ±10 km	step=3 (~90 m)	~400K	2048² Sentinel-2
Valley	Bhuntar to Pin Parvati	step=4 (~120 m)	~300K	4096×2048 Sentinel-2
Expanded	Full GHNP + Khirganga NP	step=6 (~180 m)	~416K	Bare (vertex colour)
Kullu	Full Beas drainage	step=8 (~240 m)	~316K	Bare (vertex colour)

Output Format