D-95 · Raichur

Canal water and crop growth for the 5,313 fields of D-95, a branch of the Tungabhadra Left Bank canal. Pick a layer, then click any field.

Draft results Not checked on the ground. The work failed 2 of its 6 own tests, so the water readings are not ready to trust. Crop greenness passed its test.

Selected field

No field selected. Zoom in and click any field inside D-95.

Data layers one at a time

Crop greennessNDVI per field · Sentinel-2 · monthly, 2019 to 2026 Water labelRadar reading per field · Sentinel-1 · Feb–Mar 2024 (canal shut) and 2025 (open) Crop-colour photoSentinel-2 near-infrared photo · monthly · growing crops show red, ponds dark blue Field outlinesPlot outlines from Google ALU over the satellite photo

Overlays

Boundaries · water user groups Canal · D-95 and main canal Villages · 12

Crop greenness

D-95 · Tungabhadra Left Bank canal

Typical greenness

–

Fields

5,313

inside water user group outlines

Area

2,532 ha

half the fields under 0.28 ha

Fields seen

–

Tests passed

4 of 6

tests 3 and 4 fail

Every dry season

Typical Jan–Mar greenness of D-95 fields each year. The canal was shut in early 2024. Click a bar to show that year's February on the map.

Water line by stretch DRAFT

Each bar is the branch drawn straight, start on the left, last field on the right, in 4 stretches. Blue means wetter than land with no canal (radar, dry days only). A red frame means the canal was shut.

wetter by 0.67 dB+a little wetter drier than outsideno dry picture

Six tests, set before any result

PASSShut year looks dryFeb–Mar 2024: every stretch drier than outside land.

PASSStart of canal wetter than end5 of 6 open years, but shut 2024 shows it too.

FAILOpen years wetter than shut yearNeeded 5 of 6 years ahead of 2024 by 0.67 dB; got 1.

FAILWetness drops after canal shutsNeeded 4 of 6 dates; got 1. Few pictures around late-April shut dates.

PASSField label repeats83–89% on fields of 0.5 ha+, with smoothing.

PASSCanal land greener than outsideJan–Mar lead 0.10–0.14 in open years, 0.01 in shut 2024.

Resolution

Greenness 10 m per field · radar 30 m per stretch, 10 m per field · photo 10 m

Source

Sentinel-2 and Sentinel-1 (Copernicus) through Google Earth Engine · plot outlines and crop guesses: Google Agricultural Understanding via Well Labs · canal dates: Tungabhadra Board yearly reports

Cloud-masked pictures (Cloud Score+ 0.6), monthly median. Months with no clear picture stay empty; nothing is filled in. Radar cannot tell canal water from borewell water. Crop names are Google's guesses. No farmer names or survey numbers are used.