This morning’s 5:00 chart from the Autoridad de Acueductos y Alcantarillados shows Carraízo at 40.69 meters — down 3 centimeters from yesterday. La Plata is at 43.70 meters — down 1 centimeter from yesterday.
Service today
Day 61 of the metro rotation, the San Juan area’s rationing schedule — interruptions paused since September 2, and AAA has not cancelled it.
AAA’s Cedro Arriba plan in Naranjito is in effect: Zone C and Zone D take turns every 48 hours; Zone D has water until Thursday at 6:00 AM.
AAA has posted no plan change, open outage or water-quality notice in the last three days.
Every notice AAA posts is on the water page, in its own words.
Reservoirs
Carraízo: down 3 cm
Carraízo kept sliding. This morning’s chart puts it at 40.69 meters — down 3 centimeters from yesterday, in the Safe band (Seguridad). The next line on the chart — into the Watch band (Observación) — sits at 39.70 meters, 0.99 meters below this morning’s reading.
Show the numbers
- Aug 8, 37.58 m, USGS gauge at 5 AM, Adjustments
- Oct 3, 40.70 m, USGS gauge at 5 AM, Safe
- Aug 9, 37.53 m, −5 cm, Adjustments
- Aug 10, 37.48 m, −5 cm, Adjustments
- Aug 11, 37.43 m, −5 cm, Adjustments
- Aug 12, 37.53 m, +10 cm, Adjustments
- Aug 13, 37.79 m, +26 cm, Adjustments
- Aug 14, 37.86 m, +7 cm, Adjustments
- Aug 15, 37.85 m, −1 cm, Adjustments
- Aug 16, 37.82 m, −3 cm, Adjustments
- Aug 17, 37.76 m, −6 cm, Adjustments
- Aug 18, 37.69 m, −7 cm, Adjustments
- Aug 19, 37.63 m, −6 cm, Adjustments
- Aug 20, 37.57 m, −6 cm, Adjustments
- Aug 21, 37.52 m, −5 cm, Adjustments
- Aug 22, 37.46 m, −6 cm, Adjustments
- Aug 23, 37.41 m, −5 cm, Adjustments
- Aug 24, 37.34 m, −7 cm, Adjustments
- Aug 25, 37.32 m, −2 cm, Adjustments
- Aug 26, 37.30 m, −2 cm, Adjustments
- Aug 27, 37.26 m, −4 cm, Adjustments
- Aug 28, 37.20 m, −6 cm, Adjustments
- Aug 29, 37.14 m, −6 cm, Adjustments
- Aug 30, 37.07 m, −7 cm, Adjustments
- Aug 31, 37.14 m, +7 cm, Adjustments
- Sep 1, 37.20 m, +6 cm, Adjustments
- Sep 2, 38.92 m, +172 cm, Watch
- Sep 3, 39.11 m, +19 cm, Watch
- Sep 4, 39.09 m, −2 cm, Watch
- Sep 5, 39.01 m, −8 cm, Watch
- Sep 6, 38.94 m, −7 cm, Watch
- Sep 7, 38.87 m, −7 cm, Watch
- Sep 8, 38.83 m, −4 cm, Watch
- Sep 9, 39.02 m, +19 cm, Watch
- Sep 10, 39.07 m, +5 cm, Watch
- Sep 11, 39.20 m, +13 cm, Watch
- Sep 12, 39.19 m, −1 cm, Watch
- Sep 13, 39.14 m, −5 cm, Watch
- Sep 14, 39.16 m, +2 cm, Watch
- Sep 15, 39.25 m, +9 cm, Watch
- Sep 16, 39.23 m, −2 cm, Watch
- Sep 17, 40.06 m, +83 cm, Safe
- Sep 18, 40.64 m, +58 cm, Safe
- Sep 19, 40.80 m, +16 cm, Safe
- Sep 20, 40.81 m, +1 cm, Safe
- Sep 21, 40.79 m, −2 cm, Safe
- Sep 22, 40.75 m, −4 cm, Safe
- Sep 23, 40.70 m, −5 cm, Safe
- Sep 24, 40.68 m, −2 cm, Safe
- Sep 25, 40.68 m, +0 cm, Safe
- Sep 26, 40.67 m, −1 cm, Safe
- Sep 27, 40.63 m, −4 cm, Safe
- Sep 28, 40.58 m, −5 cm, Safe
- Sep 29, 40.53 m, −5 cm, Safe
- Sep 30, 40.51 m, −2 cm, Safe
- Oct 1, 40.47 m, −4 cm, Safe
- Oct 2, 40.60 m, +13 cm, Safe
- Oct 4, 40.74 m, +4 cm, Safe
- Oct 5, 40.72 m, −2 cm, Safe
- Oct 6, 40.69 m, −3 cm, Safe
- Sep 30, 0.53 in of rain
- Oct 1, 1.45 in of rain
- Oct 2, 0.01 in of rain
- Oct 3, 0.03 in of rain
- Oct 4, 0.04 in of rain
- Oct 5, 0.08 in of rain
Carraízo, October 6
- Level today
- 40.69 mSafe band
- Change since yesterday
- −3 cm
- To the Watch line
- 0.99 mline at 39.70 m
- At this week's pace
- rising
La Plata: down 1 cm
La Plata kept sliding. This morning’s chart puts it at 43.70 meters — down 1 centimeter from yesterday, in the Adjustments band (Ajustes). The next line on the chart — into the Control band — sits at 40.50 meters, 3.20 meters below this morning’s reading. At this week’s pace that is about 44 days away (straight-line date: November 20 — a projection, not a forecast; one wet afternoon moves it).
If your water comes from La Plata — Dorado, Guaynabo, Naranjito, Toa Alta, Toa Baja, Vega Alta, Bayamón, Cataño, Corozal — this is the reservoir to watch; AAA lists 130,828 client accounts on it.
Show the numbers
- Aug 8, 46.46 m, USGS gauge at 5 AM, Watch
- Oct 3, 43.87 m, USGS gauge at 5 AM, Adjustments
- Aug 9, 46.38 m, −8 cm, Watch
- Aug 10, 46.29 m, −9 cm, Watch
- Aug 11, 46.20 m, −9 cm, Watch
- Aug 12, 46.16 m, −4 cm, Watch
- Aug 13, 46.11 m, −5 cm, Watch
- Aug 14, 46.02 m, −9 cm, Watch
- Aug 15, 45.95 m, −7 cm, Watch
- Aug 16, 45.88 m, −7 cm, Watch
- Aug 17, 45.80 m, −8 cm, Watch
- Aug 18, 45.71 m, −9 cm, Watch
- Aug 19, 45.62 m, −9 cm, Watch
- Aug 20, 45.55 m, −7 cm, Watch
- Aug 21, 45.49 m, −6 cm, Watch
- Aug 22, 45.42 m, −7 cm, Watch
- Aug 23, 45.35 m, −7 cm, Watch
- Aug 24, 45.28 m, −7 cm, Watch
- Aug 25, 45.23 m, −5 cm, Watch
- Aug 26, 45.15 m, −8 cm, Watch
- Aug 27, 45.04 m, −11 cm, Watch
- Aug 28, 44.93 m, −11 cm, Watch
- Aug 29, 44.83 m, −10 cm, Adjustments
- Aug 30, 44.72 m, −11 cm, Adjustments
- Aug 31, 44.67 m, −5 cm, Adjustments
- Sep 1, 44.59 m, −8 cm, Adjustments
- Sep 2, 44.59 m, +0 cm, Adjustments
- Sep 3, 44.59 m, +0 cm, Adjustments
- Sep 4, 44.57 m, −2 cm, Adjustments
- Sep 5, 44.54 m, −3 cm, Adjustments
- Sep 6, 44.52 m, −2 cm, Adjustments
- Sep 7, 44.46 m, −6 cm, Adjustments
- Sep 8, 44.40 m, −6 cm, Adjustments
- Sep 9, 44.32 m, −8 cm, Adjustments
- Sep 10, 44.24 m, −8 cm, Adjustments
- Sep 11, 44.14 m, −10 cm, Adjustments
- Sep 12, 44.25 m, +11 cm, Adjustments
- Sep 13, 44.26 m, +1 cm, Adjustments
- Sep 14, 44.40 m, +14 cm, Adjustments
- Sep 15, 44.46 m, +6 cm, Adjustments
- Sep 16, 44.40 m, −6 cm, Adjustments
- Sep 17, 44.36 m, −4 cm, Adjustments
- Sep 18, 44.40 m, +4 cm, Adjustments
- Sep 19, 44.61 m, +21 cm, Adjustments
- Sep 20, 44.66 m, +5 cm, Adjustments
- Sep 21, 44.70 m, +4 cm, Adjustments
- Sep 22, 44.72 m, +2 cm, Adjustments
- Sep 23, 44.68 m, −4 cm, Adjustments
- Sep 24, 44.63 m, −5 cm, Adjustments
- Sep 25, 44.56 m, −7 cm, Adjustments
- Sep 26, 44.47 m, −9 cm, Adjustments
- Sep 27, 44.39 m, −8 cm, Adjustments
- Sep 28, 44.31 m, −8 cm, Adjustments
- Sep 29, 44.22 m, −9 cm, Adjustments
- Sep 30, 44.13 m, −9 cm, Adjustments
- Oct 1, 44.04 m, −9 cm, Adjustments
- Oct 2, 43.96 m, −8 cm, Adjustments
- Oct 4, 43.79 m, −8 cm, Adjustments
- Oct 5, 43.71 m, −8 cm, Adjustments
- Oct 6, 43.70 m, −1 cm, Adjustments
- Sep 30, 0.5 in of rain
- Oct 1, 0.02 in of rain
- Oct 2, 0.01 in of rain
- Oct 3, 0.01 in of rain
- Oct 4, 0.84 in of rain
- Oct 5, 0.02 in of rain
La Plata, October 6
- Level today
- 43.70 mAdjustments band
- Change since yesterday
- −1 cm
- To the Control line
- 3.20 mline at 40.50 m
- At this week's pace
- about 44 daysstraight-line date: November 20
The other rationing reservoir
Cidra, October 6
- Level today
- 400.54 mWatch band
- Change since yesterday
- 0 cm
- To the Adjustments line
- 0.31 mline at 400.23 m
- At this week's pace
- holding
Outlook
What the numbers say
The week’s clearest story is a split. Carraízo has turned around, rising an average of 3 cm a day after falling 2.8 cm a day the week before, and the rain explains much of it. The 1.45 in on October 1 was followed by a 13 cm gain the next morning, while the lighter rain on September 30 only slowed a decline. It slipped 3 cm this morning, so the climb is not a straight line. At this week’s pace, Carraízo would cross into the Spilling band (Desborde) in about 9 days, around October 15. That is arithmetic, not a forecast.
La Plata is moving the other way and barely noticed the rain. Its 14 straight mornings of decline continue at roughly the same pace as last week, and both wet days were followed by drops of 9 cm and 8 cm. If that pace held, it would reach the Control line around November 20. Cidra is effectively flat, with its weekly movement inside chart-reading noise despite the heaviest rain totals of the three.
What to watch
- Carraízo: whether the rise survives a dry week — this week’s gain came with 2.14 in of rain nearby.
- Río Grande, Canóvanas and Loíza: whether AAA says in public that the east-side rationing is over, and posts that the Canóvanas filtration plant is back in operation.
- Naranjito: AAA’s Cedro Arriba plan — its calendar runs through October 31; whether AAA extends it, changes the phase or ends it.
Lake levels
The USGS gauge at Carraízo read 40.68 meters at 5:45 AM. The USGS gauge at La Plata read 43.70 meters at 5:45 AM. The USGS gauge at Cidra read 400.54 meters at 5:45 AM.
The gauges report every quarter hour and their readings are provisional; the bands are measured on AAA’s 5:00 chart.
How we read the data
This is the 52nd Daily Water Watch (yesterday’s is here). The levels update every morning on the water page.
Levels: AAA’s daily reservoir chart, October 6. Rain: USGS gauges within 12 km of each reservoir. Day counts start August 7, when the metro rotation took effect. Straight-line dates are arithmetic, not forecasts. How we report.