Carraízo dropped below the spill line this morning, at 40.88 meters. This morning’s 5:00 chart from AAA shows La Plata at 42.51 meters, up 13 centimeters from yesterday.
Service today
Day 95 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: AAA’s published calendar has run out; AAA has not said what follows.
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 8 cm
Carraízo slipped overnight. The level crossed a band line: the chart now reads Safe (Seguridad), down from the Spilling band (Desborde) yesterday. This morning’s chart puts it at 40.88 meters, down 8 centimeters from yesterday, in the Safe band. The next line on the chart, into the Watch band (Observación), sits at 39.70 meters, 1.18 meters below this morning’s reading.
Show the numbers
- Sep 11, 39.20 m, 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 23, 40.81 m, −4 cm, Safe
- Oct 24, 40.77 m, −4 cm, Safe
- Oct 25, 40.75 m, −2 cm, Safe
- Oct 26, 40.75 m, +0 cm, Safe
- Oct 27, 40.73 m, −2 cm, Safe
- Oct 28, 40.77 m, +4 cm, Safe
- Oct 29, 40.76 m, −1 cm, Safe
- Oct 30, 40.75 m, −1 cm, Safe
- Oct 31, 40.72 m, −3 cm, Safe
- Nov 1, 40.74 m, +2 cm, Safe
- Nov 2, 40.72 m, −2 cm, Safe
- Nov 3, 40.72 m, +0 cm, Safe
- Nov 4, 40.70 m, −2 cm, Safe
- Nov 5, 40.85 m, +15 cm, Safe
- Nov 6, 40.84 m, −1 cm, Safe
- Nov 7, 40.83 m, −1 cm, Safe
- Nov 8, 40.96 m, +13 cm, Spilling
- Nov 9, 40.88 m, −8 cm, Safe
- Nov 3, 0.01 in of rain
- Nov 4, 2.2 in of rain
- Nov 5, 0.11 in of rain
- Nov 6, 0.09 in of rain
- Nov 7, 1.01 in of rain
- Nov 8, 1.72 in of rain
- Nov 9, 0.01 in of rain
Carraízo, November 9
- Level today
- 40.88 mSafe band
- Change since yesterday
- −8 cm
- To the Watch line
- 1.18 mline at 39.70 m
- At this week's pace
- rising
La Plata: a rise
La Plata gained ground overnight. This morning’s chart puts it at 42.51 meters, up 13 centimeters from yesterday, in the Adjustments band (Ajustes). The next line on the chart, into the Control band, sits at 40.50 meters, 2.01 meters below this morning’s reading.
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
- Sep 11, 44.14 m, 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 23, 42.87 m, −10 cm, Adjustments
- Oct 24, 42.76 m, −11 cm, Adjustments
- Oct 25, 42.64 m, −12 cm, Adjustments
- Oct 26, 42.52 m, −12 cm, Adjustments
- Oct 27, 42.40 m, −12 cm, Adjustments
- Oct 28, 42.28 m, −12 cm, Adjustments
- Oct 29, 42.27 m, −1 cm, Adjustments
- Oct 30, 42.27 m, +0 cm, Adjustments
- Oct 31, 42.20 m, −7 cm, Adjustments
- Nov 1, 42.12 m, −8 cm, Adjustments
- Nov 2, 42.04 m, −8 cm, Adjustments
- Nov 3, 41.94 m, −10 cm, Adjustments
- Nov 4, 41.83 m, −11 cm, Adjustments
- Nov 5, 41.78 m, −5 cm, Adjustments
- Nov 6, 41.84 m, +6 cm, Adjustments
- Nov 7, 42.10 m, +26 cm, Adjustments
- Nov 8, 42.38 m, +28 cm, Adjustments
- Nov 9, 42.51 m, +13 cm, Adjustments
- Nov 4, 0.59 in of rain
- Nov 5, 0.74 in of rain
- Nov 6, 0.28 in of rain
- Nov 7, 0.88 in of rain
- Nov 8, 0.65 in of rain
La Plata, November 9
- Level today
- 42.51 mAdjustments band
- Change since yesterday
- +13 cm
- To the Control line
- 2.01 mline at 40.50 m
- This morning
- rising
Cidra: the other rationing reservoir
- Level today
- 400.94 mWatch band
- Change since yesterday
- +12 cm
- To the Adjustments line
- 0.71 mline at 400.23 m
- This morning
- rising
Outlook
What the numbers say
All three reservoirs are climbing over the past week, and the rain is the reason. Carraízo has gained 2.7 cm a day, a turnaround from a flat-to-slightly-falling week before, and La Plata has swung from a decline to a rise of 9.5 cm a day. Today’s small drop at Carraízo is a single morning against a week that is clearly up, and the rain-response pattern shows why: big storm days, like November 4, are followed by gains the next morning, while lighter days add little.
The pace arithmetic is worth reading carefully. At this week’s rate, Carraízo would reach the Spilling line in about 3 days, but that assumes the rain keeps coming. La Plata is the slowest to recover: it has lost 404 cm since August 7, so even a strong week leaves it far below where it started. Cidra’s projected climb into the Safe band is about 13 days out. These are projections at the trailing-week pace, not forecasts, and they would stall quickly if the rain stops.
What to watch
- Carraízo: whether the rise survives a dry week. This week’s gain came with 5.15 in of rain nearby.
- La Plata: whether the rise survives a dry week. This week’s gain came with 3.14 in of rain nearby.
- Cidra: whether the rise survives a dry week. This week’s gain came with 5.31 in of rain nearby.
- 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 40.92 meters at 5:45 AM. The gauge USGS runs at La Plata read 42.53 meters at 5:45 AM. The gauge USGS runs at Cidra read 400.94 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.
Elsewhere today
- La Plata Reservoir Watershed in Comerío Gets Nearly Six Inches of Rain, Easing Drought, Metro PR
- Oversight Board Approves Payment Plan for Las Marías’ $327,078 Debt to AAA, NotiCel
How we read the data
This is the 81st Daily Water Watch (yesterday’s is here). The levels update every morning on the water page.
Levels: AAA’s daily reservoir chart, November 9. 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.