This morning’s 5:00 chart from AAA shows Carraízo at 40.72 meters, down 3 centimeters from yesterday. La Plata is at 42.20 meters, down 7 centimeters from yesterday.
Service today
Day 86 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 Sunday 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 40.72 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, 1.02 meters below this morning’s reading.
Show the numbers
- Sep 2, 38.92 m, 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 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
- Oct 25, 0.01 in of rain
- Oct 26, 0.49 in of rain
- Oct 27, 0.19 in of rain
- Oct 28, 0.01 in of rain
- Oct 29, 0.01 in of rain
- Oct 30, 0.16 in of rain
Carraízo, October 31
- Level today
- 40.72 mSafe band
- Change since yesterday
- −3 cm
- To the Watch line
- 1.02 mline at 39.70 m
- At this week's pace
- holding
La Plata: down 7 cm
La Plata slipped overnight. This morning’s chart puts it at 42.20 meters, down 7 centimeters from yesterday, in the Adjustments band (Ajustes). The next line on the chart, into the Control band, sits at 40.50 meters, 1.70 meters below this morning’s reading. At this week’s pace that is about 23 days away (at this pace, November 24: 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
- Sep 2, 44.59 m, 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 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
- Oct 28, 0.06 in of rain
- Oct 30, 0.16 in of rain
La Plata, October 31
- Level today
- 42.20 mAdjustments band
- Change since yesterday
- −7 cm
- To the Control line
- 1.70 mline at 40.50 m
- At this week's pace
- about 23 daysat this pace: November 24
Cidra: the other rationing reservoir
- Level today
- 400.59 mWatch band
- Change since yesterday
- 0 cm
- To the Adjustments line
- 0.36 mline at 400.23 m
- At this week's pace
- holding
Outlook
What the numbers say
Over the past week Carraízo has been falling an average of 0.5 cm a day. That is 3 straight mornings lower, -5 cm in all. Since the rotation began 85 days ago it has gained 308 cm, from 37.64 m. It sits 1.02 m above the Watch line (the next band down), at 40.72 m in the Safe band. The week’s net movement is inside chart-reading noise: effectively flat. Gauges USGS runs nearby recorded 0.87 in of rain this week, most of it October 26 (0.49 in).
Over the past week La Plata has been falling an average of 7.3 cm a day, about the same pace as the week before (7 cm a day). Since August 7 it has lost 435 cm, from 46.55 m. It sits 1.70 m above the Control line (the next band down), at 42.20 m in the Adjustments band. At this week’s pace the Control line (40.50 m) is about 23 days away, around November 24; arithmetic, not a forecast. Gauges USGS runs nearby recorded 0.22 in of rain this week, most of it October 30 (0.16 in).
Over the past week Cidra has been falling an average of 0.2 cm a day. Since August 7 it has gained 42 cm, from 400.17 m. It sits 0.36 m above the Adjustments line (the next band down), at 400.59 m in the Watch band. The week’s net movement is inside chart-reading noise: effectively flat. Gauges USGS runs nearby recorded 1.92 in of rain this week; the wettest day was October 26 (0.8 in). After the 0.8 in on October 26, the next morning’s reading was 0 cm. After the 0.73 in on October 29, the next morning’s reading was 0 cm.
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 40.72 meters at 5:45 AM. The gauge USGS runs at La Plata read 42.19 meters at 5:45 AM. The gauge USGS runs at Cidra read 400.59 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 74th Daily Water Watch (yesterday’s is here). The levels update every morning on the water page.
Levels: AAA’s daily reservoir chart, October 31. 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.