| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
501  | Huai Thong Huai Chong,Huai Thong,hwy thng,ห้วยธง | Thailand, Nong Khai | intermittent stream | N 17° 40′ 51'' | E 102° 47′ 0'' |
| 502 | Khlong Thap Sai Khlong Thap Sai,khlxng thab si,khlxng thab thir,คลองทับไซ,คลองทับไทร | Thailand, Phichit | canal | N 16° 27′ 14'' | E 100° 26′ 39'' |
| 503 | Bueng Thap Platai Bueng Thap Platai,Bung Thap Pla Tai,bung thab pla tı,บึงทับปลาใต้ | Thailand, Chai Nat | pond | N 15° 16′ 11'' | E 100° 9′ 3'' |
| 504 | Huai Thae Rae Huai Thae Rae,Huai Thaerae,ห้วยแทแร | Thailand, Ubon Ratchathani | stream | N 15° 2′ 4'' | E 105° 30′ 19'' |
| 505 | Huai Tha Taeng Huai Tha Daeng,Huai Tha Taeng,ห้วยท่าแตง | Thailand, Ubon Ratchathani | stream | N 15° 28′ 0'' | E 105° 17′ 17'' |
| 506 | Huai Tha Wat Huai Tha,Huai Tha Wat,hwy tha wad,ห้วยท่าวัด | Thailand, Loei | intermittent stream | N 17° 27′ 40'' | E 101° 19′ 58'' |
| 507 | Ao Nit Ao Nit,Ao Ta Nit,xaw nid,อ่าวนิด | Thailand, Trat | bay | N 11° 48′ 4'' | E 102° 29′ 25'' |
| 508 | Huai Ta Lio Huai Ta Lio,Huai Ta Liu,hwy ta liw,ห้วยตาลิ่ว | Thailand, Ubon Ratchathani | stream | N 14° 51′ 58'' | E 105° 9′ 1'' |
| 509 | Huai Takhrai Huai Takhrai,Huai Takrai,hwy takhir,ห้วยตะไคร่ | Thailand, Si Sa Ket | intermittent stream | N 14° 26′ 53'' | E 104° 30′ 42'' |
| 510 | Bueng Takhreng Bueng Takhreng,Bung Takhreng,bung ta kherng,บึงตะเครง | Thailand, Phitsanulok | pond | N 16° 43′ 15'' | E 100° 4′ 3'' |
| 511 | Lam Takhong Long Lam Nam Takhong,Lam Takhong Long,la ta khxng hlng,ลำตะคองหลง | Thailand, Nakhon Ratchasima | stream | N 14° 52′ 44'' | E 101° 44′ 38'' |
| 512 | Nam Tak Huai Nam Tak,Nam Tak,na tak,น้ำตาก | Thailand, Phitsanulok | stream | N 17° 9′ 42'' | E 100° 37′ 0'' |
| 513 | Huai Suak Huai Suak,Nam Suak,hwy swk,ห้วยสวก | Thailand, Uttaradit | stream | N 18° 4′ 58'' | E 100° 56′ 49'' |
| 514 | Khlong Song Salueng Khlong Song Salueng,Khlong Song Salung,khlxng sxng slung,คลองสองสลึง | Thailand, Rayong | stream | N 12° 40′ 18'' | E 101° 35′ 25'' |
| 515 | Ang Kep Nam Sok Nam Khao Ang Kep Nam Sok Nam Khao,Sok Nam Khao Reservoir,xang keb na sok nakhaw,อ่างเก็บน้ำโสกน้ำขาว | Thailand, Udon Thani | reservoir(s) | N 17° 19′ 37'' | E 102° 42′ 21'' |
| 516 | Nong Soe Phloe Nong Soe Phloe,Nong Soephoe,hn xng sex phel x,หนองเสอเพลอ | Thailand, Udon Thani | pond | N 17° 11′ 59'' | E 102° 52′ 48'' |
| 517 | Lam Siao Yai Lam Siao Yai,Lam Sieo Yai,ลำเสียวใหญ่ | Thailand, Roi Et | stream | N 15° 36′ 43'' | E 103° 45′ 54'' |
| 518 | Lam Siao Noi Lam Siao Noi,Lam Sieo Noi,la seiyw nxy,ลำเสียวน้อย | Thailand, Roi Et | stream | N 15° 36′ 43'' | E 103° 45′ 55'' |
| 519 | Huai Siao Huai Siao,Huai Sieo,hwy seiyw,ห้วยเสี้ยว | Thailand, Nan | stream | N 19° 0′ 21'' | E 100° 46′ 25'' |
| 520 | Huai Siao Huai Siao,Huai Sieo,hwy seiyw,ห้วยเสียว | Thailand, Chaiyaphum | stream | N 15° 54′ 51'' | E 102° 6′ 6'' |
| 521 | Lam Siao Yai Huai Sieo,Lam Siao Yai,ลำเสียวใหญ่ | Thailand, Sa Kaeo | stream | N 14° 2′ 32'' | E 102° 25′ 10'' |
| 522 | Bueng Sida Bueng Sida,Bung Sida,bung si da,บึงสีดา | Thailand, Nakhon Phanom | pond | N 17° 5′ 13'' | E 104° 45′ 21'' |
| 523 | Huai Siat Cha-oeng Huai Siat Cha-oeng,Huai Siat Choeng,hwy seiyd ca xeing,ห้วยเสียดจะเอิง | Thailand, Surin | stream | N 14° 38′ 26'' | E 104° 3′ 6'' |
| 524 | Ang Nam Nong Sa-ue Ang Nam Nong Sa-ue,Bo Sa-u,xang na hnxng sa xux,อ่างน้ำหนองสะอือ | Thailand, Sakon Nakhon | reservoir(s) | N 17° 24′ 3'' | E 104° 12′ 55'' |
| 525 | Huai Satueng Ta Em Huai Satueng Ta Em,Satung Sala,hwy s tung ta xem,ห้วยสตึงตาเอม | Thailand, Si Sa Ket | intermittent stream | N 14° 30′ 53'' | E 104° 12′ 32'' |
| 526 | Huai Satueng Sala Huai Satueng Sala,Satung Sala,hwy s tung sala,ห้วยสตึงศาลา | Thailand, Si Sa Ket | intermittent stream | N 14° 28′ 55'' | E 104° 12′ 1'' |
| 527 | Nam Mae Satot Nam Mae Sa-tot,Nam Mae Satot,na mæ st xd,น้ำแม่สต๊อด | Thailand, Phayao | intermittent stream | N 19° 14′ 6'' | E 100° 21′ 1'' |
| 528 | Khlong Sai Chanuan Khlong Sai Chanuan,Lam Sap Sai Chanuan,khlxng say chnwn,คลองสายชนวน | Thailand, Saraburi | canalized stream | N 14° 51′ 29'' | E 101° 27′ 4'' |
| 529 | Khlong Sap Ngulueam Khlong Sap Ngu Luam,Khlong Sap Ngulueam,khlxng sab ngu heluxm,คลองซับงูเหลือม | Thailand, Lopburi | canalized stream | N 15° 13′ 32'' | E 101° 17′ 20'' |
| 530 | Huai Saphue Huai Saphu,Huai Saphue,hwy saphux,ห้วยสะพือ | Thailand, Ubon Ratchathani | stream | N 15° 30′ 33'' | E 104° 59′ 11'' |
| 531 | Khlong Nam Sap Huai Nam Sap,Khlong Nam Sap,Nam Chab River,khlxng nasab,คลองน้ำซับ | Thailand, Lopburi | canalized stream | N 14° 57′ 14'' | E 101° 5′ 3'' |
| 532 | Huai San Noi Huai Nam San Noi,Huai San Noi,hwy na san nxy,hwy san nxy,ห้วยน้ำสานน้อย,ห้วยสานน้อย | Thailand, Loei | stream | N 17° 24′ 35'' | E 101° 26′ 6'' |
| 533 | Huai Nam San Kha Huai Nam San Kha,Nam San Kha,hwy na san kha,ห้วยน้ำสานขา | Thailand, Loei | stream | N 17° 22′ 53'' | E 101° 22′ 14'' |
| 534 | Ang Kep Nam Nong Chang Yai Ang Kep Nam Nong Chang Yai,Nong Sang Yai,อ่างเก็บน้ำหนองช้างใหญ่ | Thailand, Ubon Ratchathani | reservoir(s) | N 15° 25′ 12'' | E 104° 48′ 50'' |
| 535 | Huai Sangkat Huai Sang Kot,Huai Sangkat,hwy sangkad,ห้วยสังกัด | Thailand, Si Sa Ket | intermittent stream | N 14° 30′ 52'' | E 104° 39′ 48'' |
| 536 | Huai Sang Ka Huai Sang Ka,Huai Sangka,hwy sang ka,ห้วยสังกะ | Thailand, Kalasin | stream | N 16° 48′ 4'' | E 103° 33′ 51'' |
| 537 | Nam Sanam Chaeng Nam Sa Chaeng,Nam Sanam Chaeng,น้ำสนามแจง | Thailand, Lopburi | stream | N 15° 4′ 48'' | E 100° 42′ 35'' |
| 538 | Nam Mae Sanam Nam Mae Sa Nam,Nam Mae Sanam,na mæ sa nam,na mæ snam,น้ำแม่สนาม,น้ำแม่สะนาม | Thailand, Phayao | stream | N 19° 12′ 13'' | E 100° 27′ 58'' |
| 539 | Bueng Samrong Bueng Samrong,Sa Samrong,bung sarong,บึงสำโรง | Thailand, Nakhon Ratchasima | pond | N 15° 8′ 22'' | E 102° 20′ 3'' |
| 540 | Ang Kep Nam Nong Sam Kha Ang Kep Nam Nong Sam Kha,Nong Sam Kha,xang keb na hnxng samkha,อ่างเก็บน้ำหนองสามขา | Thailand, Amnat Charoen | reservoir(s) | N 15° 41′ 39'' | E 104° 29′ 5'' |
| 541 | Khlong Rang Salit Khlong Rang Salit,Khlong Salit,khlxng rang slid,คลองรางสลิด | Thailand, Suphan Buri | canal | N 14° 17′ 54'' | E 100° 4′ 52'' |
| 542 | Huai Sak Nga Huai Sak Nga,Nam Sak Nga,hwy sak nga,ห้วยสักงา | Thailand, Loei | stream | N 17° 8′ 16'' | E 101° 21′ 17'' |
| 543 | Huai Sai Noi Huai Sai,Huai Sai Na Saeng,Huai Sai Noi,hwy thray nxy,ห้วยทรายน้อย | Thailand, Bueng Kan | stream | N 18° 5′ 55'' | E 103° 48′ 22'' |
| 544 | Khlong Sai Huai Sai,Khlong Sai,khlxng thray,คลองทราย | Thailand, | canal | N 16° 0′ 39'' | E 100° 45′ 33'' |
| 545 | Huai Sai Huai Sai,Khlong Sai,hwy thray,ห้วยทราย | Thailand, Prachin Buri | stream | N 14° 23′ 16'' | E 101° 35′ 38'' |
| 546 | Khlong Sahakon Sai Nueng Khlong Sahakon,Khlong Sahakon Sai Nueng,khlxng shkrn say hnung,คลองสหกรณ์สายหนึ่ง | Thailand, Samut Sakhon | canal | N 13° 31′ 21'' | E 100° 19′ 18'' |
| 547 | Huai Saduang Yai Huai Sadduang Yai,Huai Saduang Yai,hwy sa dwng hıy,ห้วยสะดวงใหญ่ | Thailand, Phetchabun | stream | N 16° 53′ 45'' | E 101° 20′ 13'' |
| 548 | Huai Ruea Huai Rua,Huai Ruea,hwy reux,ห้วยเรือ | Thailand, Ubon Ratchathani | intermittent stream | N 15° 25′ 38'' | E 105° 27′ 13'' |
| 549 | Rong Khun Huai Rong Khun,Rong Khun,rxng khun,ร่องขุ่น | Thailand, Phayao | stream | N 19° 30′ 52'' | E 100° 12′ 4'' |
| 550 | Nong Ri Nong Ri,Nong Ru,hnxng ri,หนองรี | Thailand, Prachin Buri | pond | N 14° 1′ 41'' | E 101° 46′ 25'' |
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