Spain's Júcar Hydrographic Confederation: Delays and Silence During Flood

The five emails from the CHJ: 30-minute delays and 2.5 hours of silence

At 11:40 on October 29, the flow of the Poyo stream exceeded 264 m³/s. The warning threshold is 150. The email was sent at 12:07, twenty-seven minutes later, copied to Civil Protection and an electronic registry. It was the first of five. The other four were not copied to anyone other than the automatic hydrological information system. The last one, which broke the scale, arrived when the river had already changed its name and nature.

The complete sequence, released to demand answers, outlines an uncomfortable pattern. Four warnings with delays between 22 and 30 minutes and a fifth sent in three minutes when the flow was already 1,686 m³/s, eleven times the threshold. Between the fourth and fifth emails, there were two and a half hours without any communication. In that gap, the stream went from 28 m³/s to multiplying its flow by sixty.

What does "monitoring continues from the SAIH room" miccionan?

The phrase appears in communications but clarifies nothing. SAIH is the Automatic Hydrological Information System, a network of sensors sending real-time data. That the room "continues monitoring" means, in practice, that someone is looking at a screen. It implies no alert, call, or protocol activation. It is the difference between seeing and warning.

The person drafting the emails does not sign with full names in the released information. Nor is it recorded that the author of the fifth email, at 18:43, picked up the phone to warn about what was already evident in the data. Email, in an emergency of this magnitude, functions as a mailbox no one opens in time.

Chronology of the five warnings and their recipients

• 11:40 — 264 m³/s. Sent at 12:07 to SAIH, copied to Civil Protection and electronic registry.
• 13:20 — 120 m³/s. Sent at 13:42 only to SAIH.
• 14:35 — 55 m³/s. Sent at 15:04 only to SAIH.
• 15:50 — 28 m³/s. Sent at 16:13 only to SAIH.
• 18:40 — 1,686 m³/s. Sent at 18:43 to SAIH, copied to the Government Sub-delegation in Valencia and its communications office.

The recipient pattern is revealing. The first warning, the only morning one copied to Civil Protection, coincides with the highest flow until then. The next three, when flow drops, go only to the automatic system. The fifth, when flow spikes, recovers institutional copies. As if the criterion was not risk, but administrative coverage.

Why were there 2.5 hours without any warning?

Between 16:13 and 18:43, no email was sent. In that interval, the Poyo stream went from 28 m³/s to 1,686 m³/s. The question is not just why no warning was issued, but why none was issued when the 150 m³/s threshold was crossed again, this time brutally, while a warning had been issued in the morning with a flow of 264.

Some argue the focus was on the Forata dam, whose potential overflow centered warnings and alerts. Dam data and stream data mix in communications, which may have diluted surveillance on the Poyo. It is a hypothesis, not a proven fact, but it fits the silence of those two and a half hours.

CECOPI and the CHJ representative

The emergency committee included the Generalitat (regional government), the Government Delegation, Civil Protection, UME (Military Emergency Unit), AEMET (State Meteorological Agency), CHJ, and security forces. CHJ had a representative. According to released data, that representative did not monitor the stream's flow during the October 29 meeting.

The overarching question is why population alerts did not arrive until 20:15, when the stream had already devastated several localities. Warnings to mayors were given since morning, with patrols in the channels. What was not warned was the magnitude of what was coming. The difference between "there is a flood risk" and "a brutal flash flood is coming" is the difference between precaution and evacuation.

Email as a channel and distribution of responsibilities

An email is not a valid channel for an alarm of this dimension. In any industrial process, critical parameters have automatic responses and strict protocols. Here, meters sent real-time data to a website updated every five minutes. The information was available. What failed was converting data into decision.

Responsibility lies with more than one body. CHJ manages channels and hydrological warnings. The Generalitat activates population alerts. The Government Delegation coordinates. Each link has its part. The investigation, if it comes, must determine why none of them converted data into a useful timely warning.

The fifth email, at 18:43, was sent copied to the Government Sub-delegation. Three minutes earlier, at 18:40, the flow was already 1,686 m³/s. By then, the Poyo stream had already done what the data announced since 11:40 in the morning.