Fixed-price underwater ROV checks for mid-size state irrigation dams
TL;DR Murkwise sends a two-person crew with a small piloted underwater robot to inspect the submerged face, intakes and gates of state irrigation dams, and then compares the footage with last year's. State water resources departments pay a fixed price per dam. The Dam Safety Act made these checks a legal duty.
India had 5,745 large dams as of June 2019[1]. Most belong to state irrigation departments, and many are decades old. The underwater parts (upstream face, trash racks, sluice gates, intake structures) are the hardest to see and the easiest to skip.
And skipping was the norm. A CAG review found that only two of 17 states studied carried out even the basic pre- and post-monsoon inspections between 2008 and 2016[1].
Divers are slow, risky in poor visibility and hard to hire in small towns. The specialist firms that do exist tend to chase large hydro, port and oil jobs, where the budgets are bigger.
Murkwise is a service and I'd keep it that way. A crew drives to the dam with an observation-class ROV, a small boat and a scanning sonar. In one or two days it covers the agreed underwater checklist and records geotagged video. Software tags each defect (crack, spalling, scour, gate seal damage, debris at the intake) and lines it up with the same spot from the last visit, so the engineer sees what changed instead of sitting through hours of murky footage.
The report follows the owner's inspection format and goes to the dam safety unit. Murkwise does not certify safety - a qualified engineer signs off.
I've reframed the seed. It pitched autonomous robots, but in silty Indian reservoirs a piloted ROV is what works today, and two Indian firms already use them[2][3]. The part you can defend is price and repeatability for the long tail of mid-size dams, with AI kept to the boring job of comparing visits.
State water resources and irrigation departments pay, through their dam safety organisations. Some states fund dam rehabilitation through World Bank-backed programmes, which come with their own procurement rules. Hydropower companies and municipal water utilities are a second buyer for intakes. There's no public price list for underwater dam inspection in India, so expect tenders and expect to quote per dam per visit.
The Dam Safety Act passed Parliament in December 2021[1]. It makes owners of specified dams inspect before and after every monsoon and after floods or earthquakes, and run full safety evaluations through expert panels[1]. Small ROVs have also got cheap - a popular entry-level ROV starts at US$4,900, about ₹4.7 L[4].
Nobody publishes a figure for spending on underwater dam inspection in India. The firmer number is the count, 5,745 large dams[1], each needing two routine inspections a year under the Act. Even if only a fraction need underwater work each cycle, that's steady, repeat demand from a handful of state buyers.
One Chennai firm runs ROVs, crawlers and sonar for dams, ports and bridges, and lists Daman Ganga Dam and the Government of Rajasthan among its clients[2]. A Kochi firm builds its own ROVs rated to 300 m and an analysis tool[3]. Both are capable and established. The gap is a standard, fixed-price package for smaller state dams that fits a routine inspection budget.
| Difficulty | Hard (55/100) |
| Starting capital | ₹1.2–2.2 Cr |
| Time to launch | 9–12 months |
The robot is the easy bit. Selling to state departments that buy through tenders is hard, and so is keeping crews safe on reservoirs and making footage comparable year to year when visibility keeps changing. Lose a tether in a reservoir and you lose a week too.
No special licence is needed to inspect dams, but the work sits inside the dam owner's legal duty.
Building this outside India? The categories above usually have a local equivalent, so check with your own regulator.
Don't trust AI to judge whether a dam is safe. A qualified engineer reviews every tag and signs off.
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I like this for a founder with dam or marine engineering experience who can sit with state engineers and wait out the tenders. If you want to sell AI software then it's a poor fit. Prove one thing first - that one state will pay a fixed per-dam price for ten dams within one budget year.
Plan for roughly ₹1.2–2.2 Cr, covering the ROV, sonar, boat, crew training and the long wait for tenders.
No special licence, but you'll need tender empanelment with state departments and written site permission for every visit. The engineer's sign-off stays with the owner.
Yes, ageing dams need inspection everywhere. Check local dam safety law, procurement rules and diving or boat safety requirements first.
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Thinking about building Murkwise or something close to it? The make-or-break work is winning the first state rate contract without pricing yourself into a loss. If you need a hand, you know where to find me. Talk to Yash →
For illustration only. Names are fictional and ideas hypothetical; sourced facts are real but may be out of date. Nothing here is legal, financial or professional advice, and Yash Khatri is not personally liable for any use of it. Read the full disclaimer.