This morning’s 5:00 chart from AAA shows Carraízo at 40.85 meters, down 3 centimeters from yesterday. La Plata is at 42.97 meters, down 9 centimeters from yesterday.
Service today
Day 77 of the metro rotation, the San Juan area’s rationing schedule, with interruptions paused since September 2, and AAA has not canceled 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 Saturday 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 slipped overnight. This morning’s chart puts it at 40.85 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, 1.15 meters below this morning’s reading.
Show the numbers
- Aug 24, 37.34 m, 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 3, 40.70 m, USGS gauge at 5 AM, 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
- Oct 7, 40.65 m, −4 cm, Safe
- Oct 8, 40.88 m, +23 cm, Safe
- Oct 9, 40.94 m, +6 cm, Safe
- Oct 10, 40.91 m, −3 cm, Safe
- Oct 11, 40.96 m, +5 cm, Spilling
- Oct 12, 40.86 m, −10 cm, Safe
- Oct 13, 40.90 m, +4 cm, Safe
- Oct 14, 40.94 m, +4 cm, Safe
- Oct 15, 40.85 m, −9 cm, Safe
- Oct 16, 40.87 m, +2 cm, Safe
- Oct 17, 40.85 m, −2 cm, Safe
- Oct 18, 40.85 m, +0 cm, Safe
- Oct 19, 40.87 m, +2 cm, Safe
- Oct 20, 40.86 m, −1 cm, Safe
- Oct 21, 40.88 m, +2 cm, Safe
- Oct 22, 40.85 m, −3 cm, Safe
- Oct 16, 0.01 in of rain
- Oct 17, 0.2 in of rain
- Oct 18, 0.7 in of rain
- Oct 19, 0.07 in of rain
- Oct 20, 0.77 in of rain
Carraízo, October 22
- Level today
- 40.85 mSafe band
- Change since yesterday
- −3 cm
- To the Watch line
- 1.15 mline at 39.70 m
- At this week's pace
- holding
La Plata: down 9 cm
La Plata slipped overnight. This morning’s chart puts it at 42.97 meters, down 9 centimeters from yesterday, in the Adjustments band (Ajustes). The next line on the chart, into the Control band, sits at 40.50 meters, 2.47 meters below this morning’s reading. At this week’s pace that is about 35 days away (at this pace, November 27: 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 24, 45.28 m, 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 3, 43.87 m, USGS gauge at 5 AM, 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
- Oct 7, 43.68 m, −2 cm, Adjustments
- Oct 8, 43.62 m, −6 cm, Adjustments
- Oct 9, 43.54 m, −8 cm, Adjustments
- Oct 10, 43.52 m, −2 cm, Adjustments
- Oct 11, 43.50 m, −2 cm, Adjustments
- Oct 12, 43.45 m, −5 cm, Adjustments
- Oct 13, 43.45 m, +0 cm, Adjustments
- Oct 14, 43.50 m, +5 cm, Adjustments
- Oct 15, 43.47 m, −3 cm, Adjustments
- Oct 16, 43.39 m, −8 cm, Adjustments
- Oct 17, 43.29 m, −10 cm, Adjustments
- Oct 18, 43.18 m, −11 cm, Adjustments
- Oct 19, 43.07 m, −11 cm, Adjustments
- Oct 20, 43.00 m, −7 cm, Adjustments
- Oct 21, 43.06 m, +6 cm, Adjustments
- Oct 22, 42.97 m, −9 cm, Adjustments
- Oct 17, 0.01 in of rain
- Oct 18, 0.2 in of rain
La Plata, October 22
- Level today
- 42.97 mAdjustments band
- Change since yesterday
- −9 cm
- To the Control line
- 2.47 mline at 40.50 m
- At this week's pace
- about 35 daysat this pace: November 27
Cidra: the other rationing reservoir
- Level today
- 400.63 mWatch band
- Change since yesterday
- 0 cm
- To the Adjustments line
- 0.40 mline at 400.23 m
- At this week's pace
- holding
Outlook
What the numbers say
The week’s pattern is mostly stillness, with one exception. Carraízo and Cidra are both effectively flat, their weekly movement inside chart-reading noise. Carraízo has held in the Safe band, and the rain this week nudged it up only a couple of centimeters the morning after each wet day. Cidra tells a similar story: about two inches of rain fell near it, yet the next-morning readings barely registered. In both cases, rain is slowing losses rather than rebuilding storage.
La Plata is the reservoir to watch. It is falling at 7 cm a day this week, against 1.2 cm a day the week before, so the decline is speeding up, and it received only 0.21 in of rain nearby. It sits in the Adjustments band, 2.47 m above the Control line. If this week’s pace simply continued, it would reach that line around November 27. That is arithmetic, not a forecast, and a few wet days would change it quickly.
What to watch
- Naranjito: whether AAA extends its Cedro Arriba plan (the calendar runs through October 31), changes the phase or ends it.
Lake levels
The gauge USGS runs at Carraízo read 40.84 meters at 5:45 AM. The gauge USGS runs at La Plata read 42.96 meters at 5:45 AM. The gauge USGS runs at Cidra read 400.63 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 66th Daily Water Watch (yesterday’s is here). The levels update every morning on the water page.
Levels: AAA’s daily reservoir chart, October 22. Rain: gauges USGS runs 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.