Authority works — Varanasi
Varanasi Nagar Nigam GPR Survey for Galis, Sewers and Cables
Compact radar and cable surveys for Varanasi Nagar Nigam work, from the narrow lanes behind the ghats to the newer wards.
Quick AnswerA Varanasi Nagar Nigam GPR survey picks apart, with depths, the sewer, main, Purvanchal cables, GAIL pipe and fibre that one gali behind the ghats can hold. It is done before a spade goes in. In the old city we use small hand-pushed ground penetrating radar (GPR) and cable locators. Jobs that are mostly about water and sewer pipes: more on underground pipeline detection.
What can a Varanasi Nagar Nigam utility survey do in the old city?
Gali by gali, it sets out the route and likely depth of each sewer, water pipe, Purvanchal cable, GAIL line and fibre duct while the paving is intact. A ground penetrating radar survey with utility locating covers the old city and the newer wards alike. Where lanes are barely wide enough for two people to pass, that drawing is often the only way a contractor can plan a dig safely.
First constituted as a Nagar Mahapalika in 1959 under the Uttar Pradesh Municipal Corporation Act, the body took the Nagar Nigam title in 1994. Its work under the roads is mostly sewers, drains, house connections and road restoration, alongside a water supply wing. Electricity is Purvanchal Vidyut Vitran Nigam's business; piped gas belongs to GAIL, whose Varanasi network was dedicated in 2018.
Why do the galis need a different method?
Because a standard radar cart and a long survey line do not fit, and because many services share little space. Behind the ghats, a sewer, a water main, house connections, newer power cables and fibre can all lie within a strip a couple of metres wide. Much of it sits under stone paving lifted and relaid many times.
Our small push-cart antenna fires high frequency pulses down through the stone; any shift in the electromagnetic properties below, at a pipe wall or a void, sends an echo up. We scan short cross-lines about every half metre and check depths at every chamber. The locator does much of the work on cables. Why mixing techniques works in such lanes is explained in more on Underground Utility Detection Methods.
What changed when the overhead wires went underground?
Much of old Kashi lost its overhead power lines when they were moved underground under a central power-sector scheme in the late 2010s. The streets became safer, but a new layer of cables, joints and feeder pillars joined the old water and sewer lines. Those cables are the most dangerous thing a hand-dug trench can meet. Where one trench holds several, each is energised in turn from its feeder pillar and labelled; see underground cable detection.
Whose lines are we likely to find?
On a typical old-city lane, at least four owners, each asked separately for permission and records. The Nagar Nigam holds sewers, drains and the mains of its water wing. Purvanchal Vidyut Vitran Nigam owns the 11 kV and LT cables and pillars, GAIL runs gas mains and house services, and telecom operators hold the newest fibre ducts. The drawing labels each owner's underground utilities clearly.
What if a lane has no records at all?
Then the ground is the only record, and we scan it more densely. Many galis have never had a usable utility plan. Every cover we may lift comes up for data collection, each house connection is tracked back to the main, and a passive locator sweep listens for live conductors. Anything not identified and mapped to an owner is shown as "owner unknown" instead of guessed, so the contractor asks before cutting it.
How do pilgrimage seasons and heritage affect the work?
They set the calendar. The area around Kashi Vishwanath Dham, rebuilt as a corridor and opened in December 2021, and the approaches to the main ghats draw huge crowds on festival days. We scan in quiet hours and avoid peak days near the temple and riverfront. On heritage paving we mark lines with chalk or removable tape on request.
Which method suits which Varanasi street?
Street width and crowding decide the kit.
| Street type | How we survey it | Usual output |
|---|---|---|
| Old-city gali near the ghats | Hand-pushed GPR, locator, chamber checks | Lane-by-lane drawing with depths |
| Market road in the old core | Early-morning scan, tight grid at crossings | Road-cut drawing |
| Arterial road in newer wards | Corridor GPR scan | Design layer and crossing list |
| Riverbank and ghat approaches | Short grids between steps and landings | Plan with levels if needed |
Table note: after the new work is laid, an as built survey for Varanasi sites records it as built.
What about the city's newer projects?
Construction projects such as the 3.75 km urban ropeway from the Cantonment towards Godowlia, in trials during 2026, and the growing gas network keep moving services. Each leaves diversions that older drawings miss. Longer routes are delivered as described at about utility mapping; our Varanasi team and soil notes are at what we do: GPR survey in Varanasi. Ganga alluvium lets radar see deep when dry but less near the river, and each sheet records the depth the GPR data reached.
What does a Varanasi survey cost?
A rate for each metre scanned, and a floor below which no project is billed.
- Standard GPR scan: ₹24 per metre
- L-section with depth profile: ₹32 per metre
- Minimum order: ₹1,00,000 per project
- Whole-order discount: 25% above 100 km, 40% above 500 km, 50% above 1,000 km
Old-city galis are short, so combine them: 4.5 km of lanes on the standard scan totals ₹1,08,000. A single 600 m lane is ₹14,400 and on its own would be billed at the minimum. GST is extra. A colleague of ours works from home in Varanasi, so radar follows your order at once and never more than a business day later. Billable travel is itemised in the quotation.
How are galis tied to a proper grid?
A gali behind the ghats may be barely two metres wide, with upper storeys almost touching, so satellite positions inside it are poor. We set control at a chowk or ghat top with DGPS fixes at open Varanasi points. A total station traverse through the old city then carries it into the lanes, recording each turn, step and cover with a level. Radar lines sit on that traverse, so each lane drawing joins the next and the main road.
Whose engineers survey Varanasi's lanes?
Mezux Touch: our own engineers, our own 58 GPR systems, utility surveys since 2003. Our staff alone work the galis, under ISO 45001, 14001 and 9001 certification. We have scanned galis and roads on Varanasi Nagar Nigam's own work orders. Sewer and cable contractors, heritage consultants and service agencies across its wards also hire us. For Varanasi utility mapping, send us your Varanasi site details.
Frequently asked questions
Can your equipment fit into the narrowest lanes?
In most cases, yes. The hand-pushed antenna and locator need well under a metre of width. Steps and broken paving are the real limits, and there we scan in short sections.
Will the survey disturb shops and homes?
Little. Scanning is quiet and quick, and we ask only for a clear strip for a few minutes as the crew passes.
Can you include ground levels along the ghat approaches?
Yes, with a topographic survey for Varanasi sites on the same base.
Do you avoid festival days?
Yes. Near the temple and the main ghats we plan around major festivals and work in quiet hours.
How soon can a crew come?
On order day, or the business day after, as our engineer is Varanasi-based. Travel, if chargeable, is priced apart in our quotation.
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Written by Saniya Parveen · Technically reviewed by Rahul Rai · Updated 8 November 2026