Shenzhen Reservoir, Reservoir in Donghu Subdistrict, Shenzhen, China

Shenzhen Reservoir is a reservoir in Luohu District, bordered by Donghu Park and Fairy Lake Botanical Garden and fed by the western slope of Mount Wutong. Its water surface covers about 4,710 mu (roughly 3.1 km²) and holds 45.77 million cubic metres, the largest capacity of Shenzhen's 168 reservoirs. It discharges into the Sham Chun River, the border with Hong Kong.

The reservoir was built in March 1965 and filled with water that same month. It was created to supply the city with drinking water and support farming as China developed new ways to support its growing cities.

The reservoir's alternate name, Donghu ("East Lake"), is used for the surrounding Donghu Park and Subdistrict. Its water is tied to Hong Kong: a 1960 agreement signed by Bao'an county representative Cao Ruoming and Hong Kong's representative Batty set annual raw water supply at 22.7 million cubic metres. The reservoir borders Donghu Park and Fairy Lake Botanical Garden.

Public access runs from 6:00 pm to 9:00 pm daily, so plan a late-afternoon visit rather than a morning one. Bus routes 3, 17, 23, 29, 211, 308, 320 and 351 stop at Shuiku Bus Stop. The reservoir borders Donghu Park and Fairy Lake Botanical Garden, which serve as entry points for walking and hiking.

The reservoir's drainage basin covers about 65 km2 of urban and forested land, and its water flows into the Sham Chun River, which forms the natural border between Hong Kong and mainland China. The reservoir is also part of Shenzhen's first-grade water source protection area.