One of the supports for the economy in Jambi province is the Shopping Center Development of shopping centers. Jambi Town Square Mall is one of the shopping centers in the City of Jambid with the Jambi Town Square Mall resulting in an additional volume of traffic on Jalan Kapten A. Bakarrudin No 88 Sipin Jambi City which causes a decrease in the performance of Jalan Kapten A. Bakarrudin No 88 Sipin. From the results of a field survey carried out for four days, the peak of the vehicle attraction at Jambi Town Square Mall on Monday 12 August 2020 at 19.00 WIB - 20.00 WIB was 415 vehicles / hour, Saturday 15 August 2020 at 19.00 WIB - 20.00 WIB as many as 421 vehicles / hour, Sunday, August 16 2020 at 19.00 WIB - 20.00 WIB, 596 vehicles / hour, Tuesday 375 vehicles / hour. The peak of the Jambi Town Square Mall Vehicle awakening is on Wednesday 12 August 2020 at 20.00 WIB - 21.00 WIB with a total of 411 vehicles / hour. Saturday 15 August 2020 at 20.00 WIB - 21.00 WIB with a total of 475 vehicles / hour, Sunday 16 August 2020 at 17.00 WIB - 18.00 WIB with a total of 521 vehicles / hour, Tuesday, August 18 2020 at 20.00 WIB - 21.00 WIB with a total of 469 vehicles / hour, the highest DS value is 1.028 at 17.00 WIB - 18.00 WIB

This study aims to analyze the rainwater harvesting system and calculate the volume of rainwater that can be accommodated for water needs at the plantation site. The research method used is the Rational method. The data used are rainfall data and catchment area which are then calculated using hydrological analysis and hydraulics analysis. The calculation of the average daily rainfall uses the Gumbel method, while the calculation of rainfall intensity uses the Vanbreen method with the Talbot formula, and to find the channel discharge using the Rational method. From the results of the calculations and analysis above, it can be concluded that 1) Rainwater harvesting can be used as an alternative for managing water resources on plantations. 2) The intensity of rainfall for the 5-year return period is 30,644 mm/hour. 3) the catchment area of the garden house 2 x 13.5 m2 can produce a rainwater discharge of = 0.0000828050 m3/second. 4) The volume of 2 sewer tanks can accommodate 1570 liters of water. 5) Farmers can take advantage of stored rainwater for up to 20 days.