Telangana’s recurring drought risk is reviving a fundamental question in water governance: should the state continue to respond to rainfall deficits mainly through relief measures, or invest more systematically in retaining rain where it falls? Former National Disaster Management Authority vice-chairman Marri Shashidhar Reddy has argued that the Four Waters Concept could help answer that question by improving groundwater availability, reducing erosion and supporting cultivation even during drought conditions.
The proposal is not presented as a new emergency intervention. It is a watershed-development model based on a ridge-to-valley approach, combining 10 earthworks with four vegetative measures across a watershed. According to Reddy, the model was developed by irrigation expert T Hanumantha Rao and had produced results in rain-fed areas, but remained under-used despite several government programmes focused on water conservation.
That distinction is important. Drought management is often measured by the speed and scale of relief provided after water shortages become visible. A watershed approach works earlier in the chain. It attempts to slow runoff, improve soil moisture, recharge groundwater and sustain local streams so that the consequences of a rainfall deficit are reduced before they become a crisis for farms and settlements.
Reddy said the Four Waters model was first implemented in villages in Telangana and Rayalaseema in 2001, at a cost of about ₹5,000 per acre at the time. He cited Gottigaripalli village in Sangareddy district as an example, claiming that it remained unaffected by consecutive droughts in 2014 and 2015 and continued to obtain water for three crops a year with minimal maintenance. The approach was also implemented in Rajasthan between 2014 and 2018, he said.
These examples point to the central promise of watershed infrastructure: resilience can be built through dispersed, relatively small interventions rather than relying only on large water-transfer systems. The model’s ridge-to-valley design treats the watershed as a connected hydrological unit. Work undertaken in upper slopes, drainage paths and lower areas is intended to function together, rather than as isolated assets whose impact ends at the boundaries of a single farm or village.
The evidence supplied in the report, however, is principally based on Reddy’s account. The report does not provide independent measurements of groundwater levels, crop yields, stream flows or household incomes in the cited villages. It also does not specify the 10 earthworks and four vegetative measures individually. That means the model’s potential can be examined through the claims made about its design and reported outcomes, but its performance cannot be independently quantified from the available material.
Reddy said the model requires a minimum average annual rainfall of about 500 mm. He also argued that several drought-affected states receive between 650 mm and 1,200 mm annually, suggesting that the limiting factor may not always be the total amount of rain. The timing of rainfall, the speed of runoff, the condition of soils, the extent of local storage and the rate of groundwater recharge can determine how much water remains available after a rainfall event.
This is the institutional issue at the heart of the proposal. Water conservation programmes frequently involve several departments and layers of administration. Watershed works may involve agriculture, rural development, irrigation, forestry, local bodies and village institutions, while the benefits may be distributed across farms, common land and downstream settlements. A model can therefore be technically sound but still under-utilised if implementation is fragmented, maintenance responsibilities are unclear or projects are selected without reference to the full watershed.
The reported cost also illustrates why scale and maintenance matter. Reddy estimated that the current cost of implementing the model is around ₹15,000 per acre. That figure is not a complete programme cost unless it is considered alongside land treatment, vegetation management, monitoring and upkeep. His account of Gottigaripalli specifically highlights minimal maintenance, but the report does not establish how that maintenance was organised, funded or sustained over time.
The model’s proposed benefits extend beyond farm irrigation. Reddy said it could improve groundwater levels, reduce soil erosion, sustain stream flows and lower dependence on drought relief. He also linked better local water security to reduced distress migration and less reliance on expensive river-linking and inter-basin water-transfer projects. These are broader claims about the relationship between water, livelihoods and public expenditure, but the supplied report does not provide data measuring those effects.
For Telangana, the argument arrives as farmers face uncertainty over irrigation water and crop prospects amid rainfall deficits associated with El Niño, according to Reddy. He described El Niño as a recurring climate phenomenon whose effects could be compounded by climate change. His conclusion was that drought policy should move beyond temporary relief and prioritise long-term watershed-based conservation.
The policy landscape described in the report already includes several government programmes aimed at water conservation. The reported problem is therefore not the complete absence of public schemes, but the limited use of a particular model at a larger scale. That raises questions about programme design and convergence: whether existing funds can be aligned around entire watersheds, whether local institutions can maintain completed works, and whether success is assessed through hydrological outcomes rather than only the number of structures created.
A drought-proofing strategy would also need to distinguish between water retained in the landscape and water consumed by agriculture. The Four Waters Concept, as described, is intended to improve availability for cultivation and support three crops annually in suitable conditions. But the report does not establish the crop mix, groundwater extraction levels or irrigation demand associated with that claim. More water in a watershed does not automatically guarantee sustainable use if withdrawals increase faster than recharge.
The same caution applies to the relationship between local conservation and large infrastructure. Reddy said the model could reduce dependence on river-linking and inter-basin transfers. That is a significant policy proposition, but the report does not compare the costs, capacities or service areas of the alternatives. What it does establish is the logic behind prioritising local retention: if runoff can be slowed and stored across farms and drainage systems, some water needs may be addressed closer to where rainfall occurs.
The larger urban question is that drought resilience is not only a rural or agricultural concern. Telangana’s towns and cities depend on water systems connected to catchments, groundwater and rural landscapes. Lower groundwater levels, degraded watersheds and crop losses can affect migration, food systems, municipal demand and public spending. Conversely, better watershed management can strengthen the wider regional system on which urban settlements depend, although the supplied report does not quantify these urban effects.
The Four Waters proposal therefore deserves attention as an implementation question rather than simply as a technical slogan. Its reported history, estimated costs and claimed results offer a basis for further examination, but the available account does not independently verify the outcomes cited by Reddy. The developments worth monitoring are whether Telangana adopts the model at scale, how responsibilities are divided between agencies and local institutions, and whether future assessments publish comparable data on groundwater, stream flows, erosion, crop performance and maintenance costs.
