Important Links

Slides and lecture material for courses on hydrology, hydraulics, and water resources.

Open-source code for DEM preprocessing, flow direction, accumulation, and catchment delineation using pysheds.

Online watershed delineation and basin boundary tool using HydroSHEDS data.

Visualise and download global surface water extent and change over time (Landsat-based, JRC/Google).

Watershed processing, DEM analysis, map-making, and hundreds of hydrology plugins.

Widely used 30 m resolution DEM for watershed delineation and terrain analysis worldwide.

Download and process IMD gridded daily rainfall and temperature datasets directly in Python.

Global reanalysis data: rainfall, temperature, winds, humidity, radiation, and more since 1940.

High-resolution satellite rainfall products (IMERG) for hydrology, flood, and extremes research.

Easy access to daily climate variables — solar radiation, temperature, humidity — for any location on Earth.

Cloud-based platform for processing Landsat, Sentinel, LULC, spectral indices, and time-series at scale.

Download Landsat imagery, SRTM DEM, aerial photos, and other geospatial datasets.

Free access to Sentinel-1 (SAR), Sentinel-2 (optical), and Sentinel-3 datasets for analysis.

Industry-standard 1D/2D river hydraulics software for flood inundation mapping and channel design.

Basin-scale hydrological model for runoff, sediment, nutrient transport, and land management scenarios.

Urban stormwater drainage and sewer network modelling — widely used for urban flood studies.

Water and air quality guidelines, standards, and monitoring references for India.

Search and reference Indian Standard (IS) codes for civil and structural engineering.

Engineering design aspects of storm water drainage systems (CPHEEO, MoHUA).

Operation, maintenance, and O&M practices for storm water drainage systems (CPHEEO, MoHUA).

IRC:5-2024 (9th Revision) — General features of design for road bridges.

IRC special publication covering design guidelines for small bridges and culverts.

Type any name (A–Z, 0–9, up to 10 characters) and watch Tetris blocks fall to spell it out. Opens in a new window.

Interactive rainfall–runoff game: drag the controls to split a storm into runoff, ET, soil storage and recharge (SCS Curve Number method), then take on the Design Challenge mode. Opens in a new window.

Fluid-mechanics game: push fluid through a venturi and watch continuity, Bernoulli's pressure drop, Reynolds number and cavitation come alive — with laminar/suction/cavitation Flow Challenges. Opens in a new window.

Fluid-properties game: drop a sphere through viscous fluid and measure viscosity from its terminal velocity (Stokes' law) — explore density, specific gravity, buoyancy and the viscosity–temperature effect. Some spheres float! Opens in a new window.

Arcade game (CE-211): drive the flow through a narrowing pipe and keep the throat pressure above the vapour pressure — squeeze too hard and cavitation destroys your pump. Opens in a new window.

Timing game (CE-211): close the valve fast for score, but feather it so the water-hammer surge (Joukowsky) stays below the pipe's burst rating. Opens in a new window.

Sorting game (CE-211): read each fluid's shear-stress curve and classify it as Newtonian, non-Newtonian, ideal plastic or thixotropic. Opens in a new window.

Wordle-style deduction (CE-211): identify the mystery fluid in six tries from higher/lower clues on density, viscosity, surface tension and specific gravity. Opens in a new window.

Surface-tension puzzle (CE-211): predict which of a droplet (2σ/r), soap bubble (4σ/r) or jet (σ/r) holds the higher internal pressure. Opens in a new window.

Capillarity puzzle (CE-211): tune the tube bore, liquid and contact angle so the meniscus hits the target line — water rises, mercury depresses (h = 2σcosθ/wr). Opens in a new window.