Part I — Situation overview

On 22–23 June 2026 an acute water crisis developed in a heatwave approaching 40 degrees. In several municipalities — including the area around Ráckeve — the drinking-water supply is faltering or limited: the utilities report low water pressure and ask residents to economise; in part of Zala county a stricter restriction was requested, citing the exhaustion of water reserves. The water level of Lake Velence has sunk to a historic low — in places it can already be walked across — and the low water level of the rivers is already affecting logistics: because of the continental heatwave, on the Rhine, for example, cargo ships are travelling with only a fraction of their capacity, which is also straining the fuel supply chain.

The phenomenon is not without precedent. MIAK’s earlier analyses (most recently in May 2026) had already signalled that drought and water shortage are a structural, year-on-year recurring challenge in Hungary — but now the heatwave has brought it into an acute form. In the case of Lake Velence, the landscape-protection researcher of MATE (the Hungarian University of Agriculture and Life Sciences), Zsombor Boromisza, warns that the problem goes beyond mere water shortage: the limits of the usage and development model built around the lake are also showing, and the future of a shallow lake that is by nature variable depends not solely on water replacement but on adjusting the landscape management to the natural conditions.

MIAK’s reading is firm: the drying-out of Lake Velence and the drinking-water crisis are not a weather anomaly but a symptom of a structural failure of climate adaptation. Occasional, crisis-time water replacement treats the symptom but not the disease. Water management must be treated as a strategic, year-round question — not as seasonal firefighting — and the answer must be given at the system level, built on the triad of monitoring–modelling–community management.

Part II — Literature foundation

Before turning to MIAK’s concrete proposals, it is worth fixing the scientific frame. Nicholas Stern (British economist, leading author of the economics of climate change) in his work the Stern Review (2007) grounds the economics of adaptation — building resilience and minimising damage — and his central thesis is that delay is more expensive than action taken in time. William Nordhaus (American economist, Nobel-Memorial-Prize-winning researcher of climate economics) in his work Warming the World (2000) developed the DICE model (a dynamic, integrated model of climate and the economy), which translates climatic damage — including the agricultural damage function of drought — into economic indicators, and thus makes it quantifiable for the decision-maker. Elinor Ostrom (American political scientist–economist, Nobel-Memorial-Prize-winning researcher of the self-governance of common-pool resources) in her work Governing the Commons formulated the design principles for the sustainable, community-self-governed management of common-pool resources (such as catchments), through the centuries-old examples of irrigation communities. The detailed literature treatment — by author, with quotations — can be found in section 6.4 Literature in detail.

Part III — MIAK’s concrete proposal

MIAK proposes a three-element, system-level national drought protocol that shifts the emphasis from symptom-treatment to prevention.

3.1 Real-time, public water monitoring (for every municipality)

MIAK proposes that the real-time, publicly accessible data of water pressure, water-reserve level and water quality be available in every municipality — on a single, easy-to-understand national platform. One of the lessons of the acute crisis is that residents and municipalities typically face the problem only when the restriction is announced; continuous, public data makes earlier intervention possible. This is the direct realisation of the K3 (real-time pollution and water-quality monitoring) programme point, and applies the transparency principle of K1 (measurable, publicly trackable climate goals).

3.2 Model-based drought forecasting (DICE-HUNGARY adaptation)

MIAK proposes a Hungarian adaptation of the Nordhaus DICE model: an integrated climate-economic model that forecasts drought damage in a regional and sectoral breakdown (agriculture, drinking water, tourism, logistics) and gives the decision-maker a calculable basis for timing intervention. The model is not an end in itself: it answers where and when it is worth ordering a reservoir, irrigation reorganisation or restriction before the crisis sets in. This is the content of the K9 (domestic integrated climate-economic model, DICE-HUNGARY) programme point, and can be supplemented with the soil-moisture data of MG1 (precision, data-based agriculture).

3.3 Community catchment management (along Ostrom’s principles)

MIAK proposes that the management of catchment regions (the Tisza system, the small watercourses, the catchment of Lake Velence) be placed in a community-self-governed frame: the affected municipalities, farmers and civil actors share the limited water reserves along transparent, jointly accepted rules, monitoring and graduated sanctions. According to Ostrom’s research, such self-governed systems are more durable and fairer than purely top-down allocation. This is the content of the MG5 (community resource-management frame, “common land 2.0”) programme point, which proposes 5 pilot regions by 2027.

The common principle of the three elements is prevention instead of firefighting: in the logic of the Stern Review, the system-level investment made now (monitoring + modelling + community management) pays off many times over compared with the deferred, crisis-time damage.

Part IV — Expected impacts and risks

Dimension Expected impact Risk
Environment / water reserves Preventive monitoring and forecasting reduce the number of crisis situations and lasting ecological damage If intervention is delayed, the damage to Lake Velence and the shallow waters may become partly irreversible
Economy / agriculture The DICE-HUNGARY forecast makes targeted irrigation and crop protection possible, mitigating drought damage Without modelling, drought damage is unpredictable; food prices and rural incomes fluctuate
Society / supply Public water data makes earlier, orderly restriction possible and reduces panic Without data and a plan, drinking-water restriction can be hasty, trust-eroding and unjust

The main consideration is the timing of the investment. Building the monitoring and model system involves an up-front cost, and its benefit shows only over several seasons — this is politically difficult, because the return is not immediate. The proposal tips to the risk side if the system is built only partially, as a crisis reaction: the lopsided solution (e.g. monitoring without forecasting, or a community frame without a data background) bears the cost but does not bring the benefit. The three elements work together.

Part V — Measurability and summary

5.1 What is worth tracking? (suggested KPIs)

MIAK proposes tracking the following performance indicators (KPIs) — these are recommendations, not government decisions:

  • Number of municipalities affected by water restriction: in the summer months it is worth tracking whether the number of municipalities ordering drinking-water restrictions decreases as a result of the preventive measures.
  • Coverage of public water data: how many municipalities’ water-pressure and water-reserve data are available in real time, publicly (target: progress towards full coverage).
  • Existence of drought forecasting: whether the first working version of the regional-sectoral drought-forecasting model (DICE-HUNGARY adaptation) is prepared.
  • Water level of Lake Velence: the water level and surface of the lake in the coming seasons — a measure of the effect of the landscape-management interventions.

5.2 Summary

MIAK’s request in a single sentence: water management must be treated, instead of seasonal firefighting, as a year-round, system-level strategy — with real-time public monitoring, model-based drought forecasting and community catchment management, framed into a single national drought protocol.

This position follows from two MIAK foundational values. Data-drivenness is literal here: water decisions are grounded in real-time measurement and modelled forecasting, not in a reaction given when the crisis has already set in — that is precisely why monitoring and DICE-HUNGARY stand at the centre of the proposal. Openness, in turn, means that the water data and the rules of catchment management are public and community-controlled: water is a common resource whose management cannot be handled over the heads of those affected, opaquely.

Part VI — Justifications and further sources

6.1 Press framing by spectrum

In the economic band, Portfolio gave the deepest framing: in an expert interview it showed that the crisis of Lake Velence is not merely water shortage but the limit of the usage model built around the lake, and separately analysed the logistical (fuel-supply) effect of the low water level of the rivers. In the liberal-left and public-affairs band, 24.hu put the acute drinking-water shortage in the headline, 444.hu the spectacular drying-out of Lake Velence (“it can be walked across”), and HVG highlighted the exhaustion of water reserves in Zala county and the utility’s restriction. ATV brought the dramatic side of the lake’s crisis. In the pro-government/conservative band, Mandiner emphasised the European scale of the continental heatwave (the temperature reaching 44 degrees), placing the domestic drought in a wider, international context. The spectrum was united on the severity of the crisis; the difference lay in the focus — local supply versus ecological system crisis versus European-scale heatwave.

6.2 Facts and data

  • The water level of Lake Velence has sunk to a historic low; according to an expert assessment, water replacement on its own does not solve the structural problem arising from the lake’s landscape-management and usage model.
  • In several municipalities (including the area around Ráckeve) there is low water pressure and a call to economise; in part of Zala county a stricter restriction citing the exhaustion of the water reserve.
  • Because of the continental heatwave the water level of the Rhine has sunk to a critical level: cargo ships are travelling with about 45% of their capacity, which is also straining the fuel supply chain — the low water level of the Hungarian rivers carries a similar logistical risk.
  • In the European heatwave, in some places the temperature may reach as high as 44 degrees.

6.3 Policy aspects

  • Environment and climate (programme points) — the measurable climate goals, the real-time water monitoring and the domestic integrated climate-economic model (DICE-HUNGARY) provide the core of the proposal;
  • Agriculture (programme points) — the community resource-management frame and precision, data-based farming ensure the catchment-level implementation;
  • Transport and infrastructure (background material) — the logistical (fuel and freight) effect of the low water level of the rivers is directly affected.

6.4 Literature in detail

6.4.1 Nicholas Stern: The Economics of Climate Change (Stern Review)

The Stern Review puts the necessity of adaptation and the danger of delay at the centre:

“Adaptation to climate change — that is, taking steps to build resilience and minimise costs — is essential (…) by providing better information, improved planning and more climate-resilient crops and infrastructure.”

According to the Review, climate adaptation — better information, planning and resilient infrastructure — is not an option but a necessity, and “delay would be dangerous and much more costly”. In the case of the Hungarian drought and water crisis this gives precisely the MIAK frame: the monitoring, forecasting and infrastructure built now (the “better information and planning”) pay off many times over compared with the deferred, crisis-time damage.

📖 Source: Nicholas Stern: The Economics of Climate Change — The Stern Review (2007)

6.4.2 William Nordhaus: Warming the World

Nordhaus developed the DICE model — the dynamic, integrated model of climate and the economy — which translates climatic effects (including agricultural damage) into economic indicators:

“One of the earliest dynamic economic models of climate change was the DICE model (a Dynamic Integrated model of Climate and the Economy).”

Nordhaus’s approach treats drought damage not as an isolated weather event but as a calculable economic effect that can be broken down regionally and sectorally. The Hungarian adaptation (DICE-HUNGARY) carries this logic into water management: the model forecasts where and when drought damage reaches the level at which preventive intervention (water storage, irrigation reorganisation) is economically justified.

📖 Source: William Nordhaus: Warming the World (2000)

6.4.3 Elinor Ostrom: Governing the Commons

Through the examples of centuries-old irrigation communities and fishing communities, Ostrom showed that the sustainable management of common-pool resources does not necessarily require either full nationalisation or privatisation: the common feature of durable, self-governed common-pool-resource (CPR) systems is the presence of clear boundaries, local rules, monitoring and graduated sanctions. In the case of the Hungarian catchments — especially the Tisza system and the catchment of Lake Velence — this means that the allocation of the limited water reserve is sustainable and fair if the affected communities manage it jointly, along transparent rules — this is operationalised by the MG5 programme point.

📖 Source: Elinor Ostrom: Governing the Commons (The Evolution of Institutions for Collective Action)

6.5 International comparison

The examples of catchment-level, community irrigation management documented by Ostrom — the Spanish huerta irrigation communities, the Philippine zanjera systems — remained sustainable over centuries because the local rules adjusted to the given water reserve. This year’s experience of the continental heatwave (the standstill on the Rhine) shows that low water level is not a Hungarian peculiarity but a European-scale, recurring risk; the proven response to it is preventive monitoring and scenario-based planning, not an occasional crisis reaction. International practice therefore supports MIAK’s system-level, preventive approach.

Environment and climate

  • K1 — Measurable, publicly trackable climate goals
  • K3 — Real-time pollution and water-quality monitoring
  • K9 — Domestic integrated climate-economic model (DICE-HUNGARY)

Agriculture

  • MG5 — Community resource-management frame (common land 2.0)
  • MG1 — Precision, data-based agriculture programme

6.7 Source register

Press sources (MIAK press monitor, 23 June 2026 — topic 5):

Knowledge-base references (literature):

  • 📖 Nicholas Stern: The Economics of Climate Change — The Stern Review (2007)
  • 📖 William Nordhaus: Warming the World (2000)
  • 📖 Elinor Ostrom: Governing the Commons (The Evolution of Institutions for Collective Action)

Note: the local file path of the books does not appear in the blog’s visible text — only the author and the title.

MIAK internal materials:

  • MIAK policy area: Environment and climate (programme points; programme point ID: K3, K9)
  • MIAK policy area: Agriculture (programme points; programme point ID: MG5)
  • MIAK press monitor, 23 June 2026 — topic 5, score: 82/100

Additional public data sources:

  • OVF (National Directorate-General for Water Management) — water-level data
  • Copernicus Drought Observatory (EDO); HungaroMet heat alerts

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