This morning’s 5:00 chart from the Puerto Rico Aqueduct and Sewer Authority (AAA) shows Carraízo at 40.87 meters, up 2 centimeters from yesterday. La Plata is at 43.39 meters, down 8 centimeters from yesterday.
Service today
Day 71 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 C 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: a rise
Carraízo gained ground overnight. This morning’s chart puts it at 40.87 meters, up 2 centimeters from yesterday, in the Safe band (Seguridad). The next line on the chart, into the Watch band (Observación), sits at 39.70 meters, 1.17 meters below this morning’s reading.
Show the numbers
- Aug 18, 37.69 m, 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 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 10, 2.73 in of rain
- Oct 11, 1.11 in of rain
- Oct 13, 1.33 in of rain
- Oct 14, 0.7 in of rain
- Oct 16, 0.01 in of rain
Carraízo, October 16
- Level today
- 40.87 mSafe band
- Change since yesterday
- +2 cm
- To the Watch line
- 1.17 mline at 39.70 m
- This morning
- rising
La Plata: down 8 cm
La Plata kept sliding. This morning’s chart puts it at 43.39 meters, down 8 centimeters from yesterday, in the Adjustments band (Ajustes). The next line on the chart, into the Control band, sits at 40.50 meters, 2.89 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
- Aug 18, 45.71 m, 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 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 10, 0.92 in of rain
- Oct 11, 0.11 in of rain
- Oct 13, 0.74 in of rain
- Oct 14, 0.01 in of rain
- Oct 15, 0.01 in of rain
La Plata, October 16
- Level today
- 43.39 mAdjustments band
- Change since yesterday
- −8 cm
- To the Control line
- 2.89 mline at 40.50 m
- At this week's pace
- months awaythe decline is very shallow
Cidra: the other rationing reservoir
- Level today
- 400.64 mWatch band
- Change since yesterday
- −2 cm
- To the Adjustments line
- 0.41 mline at 400.23 m
- At this week's pace
- holding
Outlook
What the numbers say
The week’s pattern is mostly a stall. Carraízo, the reservoir most metro taps depend on, has gone flat after a strong rise earlier in the month: its seven-day rate is slightly negative, and its biggest single-morning gain in the last two weeks came on October 8. Heavy rain, 5.88 inches at nearby gauges, did not translate into steady gains, since mornings after wet days swung between rises and drops. Cidra is also flat, and La Plata is still falling, though the decline is slowing, with a 2.2 cm daily loss against 5.5 cm the week before.
Distance to the next band line is the practical measure here. At this week’s pace, La Plata’s drop to the Control line is more than two months away, which is arithmetic, not a forecast. Cidra sits 0.41 m above the Adjustments line, but it is edging up on average, so it is not closing on that line. Carraízo has a 1.17 m cushion above observación. Because the metro rotation’s scheduled interruptions are paused, none of these movements can be credited to them. The levels are responding to rain and runoff, and so far the rain has been uneven in its effect.
What to watch
- La Plata: whether the slowdown holds. A second week under 5.5 cm a day would show the decline easing.
- Naranjito: whether AAA extends its Cedro Arriba plan (the calendar runs through October 31), changes the phase or ends it.
Drought map
The US Drought Monitor map dated October 13 puts 45 of 78 municipios in at least moderate drought (D1). The worst tier, D3 extreme drought, covers 9 of them, led by Guánica, Santa Isabel and Lajas. Since the map of October 6, no municipio worsened and 11 improved, while 67 stayed in the same category. The biggest move: Peñuelas (extreme drought to severe drought).
Where the map is worst
| Municipio | Category | Share of area (Share of the municipio's area at this category or worse) |
|---|---|---|
| Guánica | D3 extreme drought | 100% |
| Santa Isabel | D3 extreme drought | 95.7% |
| Lajas | D3 extreme drought | 90% |
| Guayanilla | D3 extreme drought | 51.9% |
| Cabo Rojo | D3 extreme drought | 40.6% |
| Juana Díaz | D3 extreme drought | 37.7% |
| Salinas | D3 extreme drought | 30.7% |
| Yauco | D3 extreme drought | 27.2% |
The 8 municipios with the largest share of their area at D3, of 9 in that tier.
Since the map of October 6
| Municipio | Last map (Worst category on the map of October 6) | This map (Worst category on this map) |
|---|---|---|
| Peñuelas | D3 extreme drought | D2 severe drought |
| Ponce | D3 extreme drought | D2 severe drought |
| Canóvanas | D2 severe drought | D1 moderate drought |
| Carolina | D2 severe drought | D1 moderate drought |
| Culebra | D2 severe drought | D1 moderate drought |
| Loíza | D2 severe drought | D1 moderate drought |
| Vieques | D2 severe drought | D1 moderate drought |
| Ceiba | D0 abnormally dry | No drought |
| Fajardo | D0 abnormally dry | No drought |
| Luquillo | D0 abnormally dry | No drought |
| Maunabo | D0 abnormally dry | No drought |
USDM categories are a weekly expert synthesis of drought indicators, not a rainfall total; municipio shares are area-weighted. The full map, colored by category, is on the water page.
Lake levels
The USGS gauge at Carraízo read 40.87 meters at 5:45 AM. The USGS gauge at La Plata read 43.38 meters at 5:45 AM. The USGS gauge at Cidra read 400.64 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 61st Daily Water Watch (yesterday’s is here). The levels update every morning on the water page.
Levels: AAA’s daily reservoir chart, October 16. 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.