English: Bay River[1] (Tagalog: Ilog ng Bay , also known as the Sapang River or the San Nicolas River, is a river system in Bay, Laguna. It is one of 21 major tributaries of Laguna de Bay[2] and is the more southern of two small rivers that hem the town proper of Bay. The Bay River forms Bay's boundary with Calauan, Laguna. A third river on the opposite side of the town, the Maitem River (Tagalog: Ilog Maitem), forms Bay's boundary with Los Baños, Laguna. The other is the Calo River (Tagalog: Ilog Calo), another Laguna de Bay tributary, to the north.) under the Bay Bridge -------- Bay, Laguna[3] is a second class[4] municipality politically subdivided into 15 barangays, one of the oldest towns in the province of Laguna[5], Philippines, covering even Los Baños [6] and Calauan[7]. In 1581, Bay became the capital of the Province of Laguna de Bay and remained so until 1688 when the capital was moved to Pagsanjan. The Patron of Bay is Saint Augustine of Hippo [8] celebrating his Feast Day during August 28. [9] Coordinates: 14°8'1"N 121°15'9"E [10] Laguna, Region 4, Philippines, Asia Geographical coordinates: 14° 10' 58" North, 121° 17' 5" East This place is situated in Laguna, Region 4, Philippines, its geographical coordinates are 14° 10' 58" North, 121° 17' 5" East and its original name (with diacritics) is Bay. LLDA [11]