Tank renovation near Kitadi R
tank-4 · 20.9975, 79.6692 · Bhandara taluka · PIN 441924
Contributing catchment 104.78 km² · at a 3 m bund it impounds 286 thousand m³ over 39 ha · design monsoon yield 49,112 thousand m³ · soil HSG-D (clay 42%).
In plain words
A large tank near Kitadi (Bhandara) fed by a very big catchment. Both sensors agree closely that it fills to reservoir scale in the monsoon and then empties almost completely by summer. Its footprint is clear of settlement.
What to build
Renovate — desilt and strengthen the existing tank. No land acquisition.
Why here
With such a large catchment, water is not the constraint — retention is. The near-total summer draw-down points to a silted bed that sheds its store too fast.
How
Desilt to restore depth, strengthen the bund and waste weir, and keep the large feeder catchment’s channels clear.
The delta — now vs after
From a tank that fills and drains within a single season to one that carries a dependable dry-season reserve — a sizeable irrigation and drinking benefit, with no displacement.
What it delivers · indicative
Live capacity from the observed satellite extent (280 ha) x 1.5 m mean depth. Desilting restores the depth lost to siltation — the tank empties to near-nothing by summer today, so recovered depth means water held later and more recharge. Irrigation ~5 TCM/ha; drinking 150 lpcd. Actual yield varies with monsoon reliability, seepage and siltation.
Incremental over today · the net-new gain, from the 4-year record
≈ 4,193 thousand m³ of net-new water · 839 ha irrigable · 76,236 drinking person-years.
recovered draw-down (280 ha of 280 ha peak) x 1.5 m — the water it loses to summer today. The site already carries ≈3 thousand m³ into summer today — that is not counted; only the recovered draw-down is new.
Why this site
An existing water body — desilting and strengthening recovers lost storage at a fraction of new-build cost.
Seasonal water extent · dual-sensor
Radar (S1, 48 passes) fills the monsoon gap that cloud hides from optical (S2, 37 scenes). Radar peak vs summer low: 271.5 → 27.8 ha, a 243.8 ha annual draw-down — the storage renovation recovers.
Area-capacity (DEM, 30 m) · gross storage by bund height
Cross-witness & confidence — independent corroboration
Two sensors track together
Optical (S2) and radar (S1) rise and fall together with correlation r = 0.75 across 37 paired months. Absolute extents match 78% — a close magnitude match strengthens the read on an open water body.
Independent inventory (HydroLAKES)
No HydroLAKES polygon within 800 m (nearest 5,543 m) — likely seasonal water not in the global inventory; treat as unconfirmed.
Land acquisition (submergence)
A 3 m bund would submerge 39 ha — the land to be acquired. Cost & consent scale with this.
⚠ catchment likely includes a through-flowing nala — verify pour point
Displacement witness — real building footprints
No structures in footprintIn the submergence footprint
0
a renovation floods no new land — desilting restores depth within the existing waterspread, so nothing is displaced.
Nearest structure
636 m
to the closest mapped building.
Within 500 m
0
buildings in the influence ring.
Restoring lost depth within the existing waterspread raises no new water level and acquires no new land, so no one is displaced. Verify bed encroachment on the historical spread on the ground before restoring the full level.
Overture Maps buildings 2026-05-20.0 (union of OSM / Google Open Buildings / Microsoft / Esri), Bhandara admin_code=506. A desktop displacement screen — precedes, not replaces, cadastral (7/12) verification.
Reconnaissance context & access — Ola + Google Places
Nearest habitation
Kitadi R
600 m away · Bhandara taluka · PIN 441924
Nearest landmark
Pagora
Schools within 2 km
2
nearest 1,376 m
Health within 2 km
0
Google Places (New) searchNearby + Ola Maps Places nearbysearch · reconnaissance-grade. Independent witness to the buildings displacement layer — dense amenities near a site corroborate high displacement. Does not replace cadastral 7/12 records, geotechnical bores or a level survey.
Human pressure — land-cover change (2022 → 2026)
Stable land coverVegetation (NDVI) change
+0.042
50 ha lost · 147 ha gained over 1,322 ha land
Built-up (NDBI) change
13.6 ha
new built-up / bare (construction proxy)
Window
2022-11..2023-02 (8 scenes)
→ 2025-11..2026-02 (8 scenes)
Sentinel-2 L2A dry-season MEDIAN composites (2022-23 vs 2025-26), water-masked; NDVI+NDBI change screen — not cadastral or DEM cut/fill
DPR-grade desktop hydrology from Copernicus GLO-30 (30 m) + ISRIC SoilGrids + ESA WorldCover; water extent from Sentinel-2 L2A MNDWI (optical) and Sentinel-1 GRD VV radiometrically calibrated to σ⁰ (DN²/sigmaNought² from the product calibration LUT, GCP thin-plate-spline geocoded, open water at σ⁰ < −17 dB; thermal-noise floor not subtracted). A desktop assessment that precedes — not replaces — the statutory ground & geotechnical survey.