▁of ▁ 2 2 . 8   ° C ▁( 7 3 . 3   ° F ) ▁on ▁Oct ▁ 4 , ▁ 2 0 1 4 . ▁ ▁This ▁range ▁is ▁less ▁extreme ▁than ▁the ▁temper atures ▁below ▁Vern alis ▁where ▁the ▁range ▁is ▁from ▁ 2 ° ▁Cel si us ▁( 3 5 . 6   ° F ) on ▁Dec ▁ 2 6 , ▁ 1 9 8 7 ▁to ▁ 3 5 . 5   ° C ▁( 9 5 . 9   ° F ) ▁on ▁August ▁ 9 , ▁ 1 9 9 0 . ▁ ▁The ▁river ▁typically ▁ends ▁above ▁the ▁M end ota ▁Pool . ▁ ▁Lar ger ▁flows ▁in ▁the ▁fall ▁may ▁make ▁it ▁possible ▁for ▁the ▁river ▁to ▁extend ▁further ▁towards ▁the ▁ocean , ▁but ▁for ▁the ▁last ▁several ▁years , ▁this ▁is ▁a ▁rare ▁occurrence . ▁ ▁The ▁water ▁is ▁largely ▁held ▁behind ▁Fri ant ▁Dam . ▁ ▁The ▁typical ▁month ly ▁flow ▁of ▁the ▁San ▁Jo aqu in ▁River ▁near ▁the ▁S ack ▁Dam ▁is ▁ 0 . ▁ ▁There ▁have ▁been ▁se ep age ▁concerns ▁below ▁this ▁part ▁of ▁the ▁river , ▁so ▁current ▁flows ▁are ▁restricted ▁below ▁the ▁S ack ▁Dam . ▁ ▁The ▁present ▁annual ▁flow ▁of ▁the ▁San ▁Jo aqu in ▁River ▁near ▁Vern alis ▁is ▁about ▁, ▁or ▁ 4 . 5 ▁million ▁a cre - fe et ▁( 5 . 6 ▁million ▁dam 3 ) ▁per ▁year . ▁According ▁to ▁US GS ▁stream ▁gauge