Reservoirs in the Guadalete-Barbate basin

On 6 October 2026 the 8 reservoirs of the Guadalete-Barbate basin held 1,243 hm³ of water, 75.3 percent of their capacity of 1,651 hm³. That is 0.6 percentage points less than a week earlier. A year earlier, on 7 October 2025, they held 42 percent. That share is above the normal range for the date, in the highest 10 percent of the weekly values of these dates in the 38 years between 1988 and 2025. We follow 8 reservoirs in the Guadalete-Barbate basin. Of the 8 reservoirs with a current reading and a normal range for the date, none read below that range and 3 reservoirs above it. Furthest above normal: Celemín. Data: 6 October 2026.

The last 12 months, against the normal range for each week

Level
Above the normal range
Normal range for the date
Median for the date
A year earlier

Share of capacity full of the reservoirs of the Guadalete-Barbate basin in each weekly bulletin from 6 October 2025 to 6 October 2026, with the normal range for each week and the same weeks a year earlier.

Table: The last 12 months, against the normal range for each week

Week starting	Share full (percent)	Normal range	Median	A year earlier
6 October 2025	42.0 percent	13.1 percent to 73.3 percent	45.4 percent	20.5 percent
13 October 2025	41.8 percent	12.9 percent to 73.2 percent	44.6 percent	20.6 percent
20 October 2025	41.5 percent	12.6 percent to 73.2 percent	44.6 percent	21.2 percent
27 October 2025	41.2 percent	12.2 percent to 72.8 percent	44.8 percent	21.1 percent
3 November 2025	41.1 percent	13.9 percent to 72.7 percent	44.4 percent	27.3 percent
10 November 2025	40.8 percent	15.0 percent to 72.7 percent	44.4 percent	27.5 percent
17 November 2025	41.8 percent	15.1 percent to 73.7 percent	44.8 percent	28.2 percent
24 November 2025	42.2 percent	15.6 percent to 74.0 percent	44.8 percent	28.5 percent
1 December 2025	42.2 percent	17.3 percent to 75.9 percent	45.2 percent	28.5 percent
8 December 2025	42.1 percent	17.3 percent to 76.4 percent	45.5 percent	28.5 percent
15 December 2025	42.3 percent	17.4 percent to 76.7 percent	45.7 percent	28.4 percent
22 December 2025	43.8 percent	17.4 percent to 77.8 percent	48.6 percent	28.4 percent
29 December 2025	45.5 percent	16.0 percent to 78.3 percent	51.1 percent	28.2 percent
5 January 2026	48.1 percent	18.2 percent to 78.3 percent	53.0 percent	28.3 percent
12 January 2026	49.3 percent	21.0 percent to 78.5 percent	54.8 percent	28.6 percent
19 January 2026	51.5 percent	21.5 percent to 78.6 percent	56.5 percent	28.5 percent
26 January 2026	58.2 percent	21.5 percent to 78.9 percent	56.4 percent	28.5 percent
2 February 2026	69.0 percent	21.5 percent to 79.1 percent	56.4 percent	29.4 percent
9 February 2026	85.1 percent	21.7 percent to 81.9 percent	56.7 percent	29.9 percent
16 February 2026	90.9 percent	21.8 percent to 85.5 percent	57.4 percent	30.0 percent
23 February 2026	91.8 percent	21.7 percent to 87.3 percent	57.8 percent	30.1 percent
2 March 2026	91.6 percent	22.5 percent to 87.8 percent	57.8 percent	30.5 percent
9 March 2026	90.8 percent	22.2 percent to 88.1 percent	59.0 percent	35.2 percent
16 March 2026	91.0 percent	22.7 percent to 88.5 percent	65.1 percent	44.6 percent
23 March 2026	90.9 percent	23.0 percent to 88.7 percent	65.1 percent	53.2 percent
30 March 2026	90.7 percent	27.5 percent to 88.5 percent	65.0 percent	54.3 percent
6 April 2026	90.7 percent	28.7 percent to 88.3 percent	64.7 percent	54.6 percent
13 April 2026	90.7 percent	28.9 percent to 89.0 percent	64.7 percent	54.9 percent
20 April 2026	90.6 percent	28.8 percent to 89.1 percent	64.6 percent	55.2 percent
27 April 2026	90.3 percent	28.4 percent to 89.9 percent	64.1 percent	55.4 percent
4 May 2026	89.8 percent	27.9 percent to 89.4 percent	64.2 percent	55.2 percent
11 May 2026	89.3 percent	27.5 percent to 88.2 percent	63.6 percent	55.2 percent
18 May 2026	89.0 percent	26.9 percent to 87.4 percent	62.6 percent	54.9 percent
25 May 2026	88.3 percent	26.6 percent to 86.9 percent	61.9 percent	54.5 percent
1 June 2026	87.6 percent	26.0 percent to 86.4 percent	61.1 percent	53.9 percent
8 June 2026	86.9 percent	25.5 percent to 86.0 percent	60.1 percent	53.4 percent
15 June 2026	86.1 percent	25.2 percent to 85.1 percent	59.2 percent	52.8 percent
22 June 2026	85.5 percent	24.6 percent to 84.5 percent	58.4 percent	52.1 percent
29 June 2026	84.7 percent	23.8 percent to 83.7 percent	57.3 percent	51.4 percent
6 July 2026	83.9 percent	22.9 percent to 82.8 percent	55.5 percent	50.5 percent
13 July 2026	82.9 percent	22.0 percent to 82.0 percent	54.8 percent	49.9 percent
20 July 2026	82.3 percent	20.9 percent to 81.1 percent	54.3 percent	49.1 percent
27 July 2026	81.5 percent	20.1 percent to 80.1 percent	53.2 percent	48.4 percent
3 August 2026	80.7 percent	18.9 percent to 79.0 percent	52.2 percent	47.4 percent
10 August 2026	80.1 percent	18.1 percent to 78.1 percent	51.2 percent	46.6 percent
17 August 2026	79.2 percent	16.9 percent to 76.9 percent	50.1 percent	45.8 percent
24 August 2026	78.4 percent	15.9 percent to 76.5 percent	49.0 percent	45.2 percent
31 August 2026	77.9 percent	15.2 percent to 75.1 percent	46.5 percent	44.5 percent
7 September 2026	77.5 percent	14.9 percent to 74.3 percent	45.9 percent	44.0 percent
14 September 2026	76.9 percent	14.3 percent to 73.7 percent	45.3 percent	43.4 percent
21 September 2026	76.3 percent	13.9 percent to 73.5 percent	45.0 percent	42.9 percent
28 September 2026	75.9 percent	13.7 percent to 73.4 percent	44.8 percent	42.6 percent
5 October 2026	75.3 percent	13.1 percent to 72.9 percent	44.7 percent	42.0 percent

0 places below normal and 3 places above

Furthest above normal

CelemínCelemín
33 hm³6 October 2026
higher than any week of these dates in 38 years
Guadalcacín IIGuadalcacín II
675 hm³6 October 2026
higher than any week of these dates in 38 years
BarbateBarbate
157 hm³6 October 2026
in the highest 10 percent for the date

Places in Guadalete-Barbate basin

Place	Reading	Against normal for the date	Change in a week
AlmodóvarAlmodóvar	3 hm³6 October 2026	within the normal range for the date	0 hm³
Arcos de la FronteraArcos de la Frontera	13 hm³6 October 2026	within the normal range for the date	0 hm³
BarbateBarbate	157 hm³6 October 2026	in the highest 10 percent for the date	-1 hm³
BornosBornos	129 hm³6 October 2026	within the normal range for the date	-1 hm³
CelemínCelemín	33 hm³6 October 2026	higher than any week of these dates in 38 years	0 hm³
Guadalcacín IIGuadalcacín II	675 hm³6 October 2026	higher than any week of these dates in 38 years	-4 hm³
Los HuronesLos Hurones	87 hm³6 October 2026	within the normal range for the date	-2 hm³
Zahara-El GastorZahara-El Gastor	146 hm³6 October 2026	within the normal range for the date	-2 hm³

Rivers and lakes

Water	Places	Above normal (places)
Almodóvarreservoir, Spain	1	0
Arcos de la Fronterareservoir, Spain	1	0
Barbatereservoir, Spain	1	1
Bornosreservoir, Spain	1	0
Celemínreservoir, Spain	1	1
Guadalcacín IIreservoir, Spain	1	1
Los Huronesreservoir, Spain	1	0
Zahara-El Gastorreservoir, Spain	1	0