Authority works — Prayagraj
Prayagraj Nagar Nigam GPR Survey After the Kumbh Works
From Civil Lines to flood-prone Daraganj, buried services under Prayagraj's corporation roads re-checked on the ground after the Maha Kumbh reshuffle.
Quick AnswerA Prayagraj Nagar Nigam GPR survey re-finds every sewer, main, cable, Indian Oil-Adani gas pipe and duct on the street, with its depth and owner, before the road is broken. Sheets still headed Allahabad rarely show the Kumbh-era diversions. Old files serve only as hints for where the ground penetrating radar (GPR) should look. Layers and formats you receive are listed at about utility mapping.
What does a Prayagraj Nagar Nigam utility survey record?
It shows a contractor where each drain, sewer, main, power cable, gas pipe and telecom duct lies under the street, how deep and whose it is. A trench or bore can then be routed to miss them. The same ground penetrating radar survey feeds the road-cut file, the consultant's design and the gang's dig plan, and it checks stale records against the ground.
Its statute is the Uttar Pradesh Municipal Corporation Act, 1959. Until October 2018 the city was officially Allahabad, so almost every older drawing, and many since, still says "Allahabad Nagar Nigam". Gas comes through Indian Oil-Adani Gas pipes, power through the state discom's cables and data through operators' fibre. Each keeps its own records, and none shows the others.
What did the Maha Kumbh leave under the roads?
A great deal of new and moved infrastructure, laid fast and not always drawn in full. Before the Maha Kumbh (13 January to 26 February 2025), much of the city saw widened roads, rebuilt junctions and relocated services. The riverside mela ground got temporary water, power and drainage grids. Permanent works stayed in the ground, and some temporary lines were lifted while others were not.
Older Nagar Nigam drawings are therefore least reliable where the most work happened. We treat every post-2024 diversion as unknown until the radar or locator has confirmed it, because buried utilities moved in haste seldom match a sketch. Where new works need recording for the next team, an as built survey for Prayagraj sites captures them as laid.
How do the two rivers affect the ground?
They keep the water table high near the banks and flood low wards in a heavy monsoon. Prayagraj stands on Ganga–Yamuna alluvium at the Sangam. GPR sends electromagnetic waves into the ground, and wet silt with high electrical conductivity absorbs them quickly. On higher ground such as Civil Lines the soil is drier, and a high frequency antenna still reaches below most services. Towards the rivers, in flood-prone localities such as Daraganj and Salori, the signal fades much sooner.
Riverside jobs are scheduled outside the monsoon where the client can wait. A calibration line measures how deep the GPR data reaches, and chamber depths and the locator take over where it runs short. The FAQ below compares those methods.
How do old records become a usable drawing?
By using them to plan the scan, never as the answer. Allahabad-era sheets, smart city drawings and contractors' rough sketches point us to likely lines and to the owners worth calling. Nothing reaches our drawing until the ground has confirmed it.
| Paper you might have | What it does for the scan | How far to trust it |
|---|---|---|
| Allahabad Nagar Nigam sewer sheets | A first line for the trunk sewers | Fair on big pipes, weak on later patching |
| Diversion sketches from the Kumbh works | Mark zones that need a tighter grid | Patchy and frequently partial |
| Smart city project drawings | Point to the new ducts and pits | Mostly sound, where built to plan |
| Indian Oil-Adani Gas and discom route records | Tell us whom to call and which crossings to check | Sound for mains, less so for house services |
Table note: all checked lines go into AutoCAD and GIS layers on one coordinate base.
Where does smart city work come in?
Mostly in the central wards, where new ducts, drains and chambers were added under the city's smart city programme. Those works often come with decent drawings, and we use them. A citywide digital record of services is the next step, and the approach is set out under see smart city underground mapping. If the sheet has to be geo-referenced, control comes from a DGPS survey for Prayagraj sites.
What does a Prayagraj survey cost?
A per-metre rate with a project minimum and long-order discounts.
- 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
Mapping 8 km of roads in the central wards at the standard rate costs ₹1,92,000. A 2 km riverside sewer profiled as an L-section is ₹64,000, so the ₹1,00,000 minimum applies and neighbouring streets are worth adding. GST is extra. Our Prayagraj-resident surveyor starts scanning straight after your order, and one business day is the longest wait. Chargeable travel, if any, is quoted as its own item.
What should a first message include?
The route, the reason and any records, however rough. A KMZ, an annotated PDF or a map pin is enough to start data collection. Say who the drawing serves and whether the site is near the Ganga or Yamuna, since the season then matters. Add the trench width, any Allahabad-era or diversion papers, your permitted road hours and who can lift chamber covers.
If no records exist, say so, and a wider band with extra chamber checks goes into the written scope. Our GPR scanning services page explains the equipment and its limits.
Can the drawing show flood levels as well as lines?
Low wards such as Daraganj and Salori go under water in a big monsoon, so pump houses, outfalls and valve chambers need levels as well as positions. We carry a benchmark in with DGPS survey for Prayagraj projects and read covers, outfalls and road crowns with a total station in the riverside wards. A client flood mark goes on the sheet too. Radar lines share that base with the utility maps, so a designer sees which chamber sits below the flood line, and hurried Kumbh diversions gain fixed coordinates.
Who surveys Prayagraj corporation projects?
Mezux Touch employees, with radar from a fleet of 58 GPR systems the company owns. The firm has surveyed utilities since 2003, keeps every field shift in-house and holds ISO 45001, 14001 and 9001. These employees have scanned Prayagraj Nagar Nigam projects under the Nigam's direct work orders. Road contractors, design engineers and the gas and power agencies in its wards also hire them for construction projects. For Prayagraj utility mapping, once your route is fixed, request a site visit for Prayagraj.
Frequently asked questions
Are old Allahabad Nagar Nigam drawings still useful?
Yes, as a starting point, above all for trunk sewers. They rarely show later repairs, connections or Kumbh-period diversions, so we check every one of the utility lines on site.
Can you survey in the monsoon?
Yes, but radar depth drops on wet ground near the rivers. Where the work can wait, a dry-season survey gives a better result.
Which method works best on damp riverside ground?
A mix: locator for metallic lines, chamber measurements for sewers, and radar for the shallow layer. See more on Underground Utility Detection Methods.
Who distributes piped gas in Prayagraj?
Indian Oil-Adani Gas. Ask them for route records early, as gas crossings need careful checking.
How soon can you start?
At once, and inside one business day of the order, as we keep staff in Prayagraj. Where travel is billable, the quotation itemises it.
Get a written quote for Prayagraj works
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Written by Saniya Parveen · Technically reviewed by Rahul Rai · Updated 8 November 2026