Arroyo de San Gregorio

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Arroyo de San Gregorio flows into Río Guadarrama , which it joins at N 40° 34′ 42″, W 3° 57′ 55″ at OSM node n2753694424, and there 329 km of total upstream flows in. load it's distributaries

Arroyo de San Gregorio has 1 tributaries.

• Arroyo del Congosto, which joins it at N 40° 35′ 2″, W 4° 0′ 0″ at OSM node n12560807305, and 4 km of total upstream flows in.
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