Examine individual changes

[ 0 => '{{Infobox river', 1 => '| name = Sandu River', 2 => '| name_native = 散渡河', 3 => '| name_native_lang = ', 4 => '| name_other = ', 5 => '| name_etymology = ', 6 => '| nickname = ', 7 => '<!---------------------- IMAGE-->', 8 => '| image = ', 9 => '| image_size = ', 10 => '| image_caption = ', 11 => '| image_alt = ', 12 => '<!---------------------- MAPS -->', 13 => '| map = ', 14 => '| map_size = ', 15 => '| map_caption = ', 16 => '| map_alt = ', 17 => '| pushpin_map = ', 18 => '| pushpin_map_size = ', 19 => '| pushpin_map_caption= ', 20 => '| pushpin_map_alt = ', 21 => '<!---------------------- LOCATION -->', 22 => '| subdivision_type1 = ', 23 => '| subdivision_name1 = ', 24 => '| subdivision_type2 = ', 25 => '| subdivision_name2 = ', 26 => '| subdivision_type3 = ', 27 => '| subdivision_name3 = ', 28 => '| subdivision_type4 = ', 29 => '| subdivision_name4 = ', 30 => '| subdivision_type5 = ', 31 => '| subdivision_name5 = ', 32 => '<!---------------------- PHYSICAL CHARACTERISTICS -->', 33 => '| length = ', 34 => '| width_min = ', 35 => '| width_avg = ', 36 => '| width_max = ', 37 => '| depth_min = ', 38 => '| depth_avg = ', 39 => '| depth_max = ', 40 => '| discharge1_location= ', 41 => '| discharge1_min = ', 42 => '| discharge1_avg = ', 43 => '| discharge1_max = ', 44 => '<!---------------------- BASIN FEATURES -->', 45 => '| source1 = ', 46 => '| source1_location = ', 47 => '| source1_coordinates= <!-- {{Coord|...}} -->', 48 => '| source1_elevation = ', 49 => '| mouth = ', 50 => '| mouth_location = ', 51 => '| mouth_coordinates = <!-- {{Coord|...|display=inline,title}} -->', 52 => '| mouth_elevation = ', 53 => '| progression = ', 54 => '| river_system = ', 55 => '| basin_size = ', 56 => '| basin_landmarks = ', 57 => '| basin_population = ', 58 => '| tributaries_left = ', 59 => '| tributaries_right = ', 60 => '| waterbodies = ', 61 => '| waterfalls = ', 62 => '| bridges = ', 63 => '| ports = ', 64 => '| custom_label = ', 65 => '| custom_data = ', 66 => '| extra = ', 67 => '}}', 68 => '', 69 => ''''Sandu River'''<ref>{{cite book | last=Mikos | first=M. | last2=Tiwari | first2=B. | last3=Yin | first3=Y. | last4=Sassa | first4=K. | title=Advancing Culture of Living with Landslides: Volume 2 Advances in Landslide Science | publisher=Springer International Publishing | year=2017 | isbn=978-3-319-53498-5 | url=https://books.google.com/books?id=EH4nDwAAQBAJ&pg=PA88 | access-date= | page=88}}</ref> ({{zh|c=散渡河|p=|first=s}}), named Wingu Water and Huachuan Water in ancient times,<ref>{{cite book | author= | title=Tianshui City Records | publisher=Fangzhi Press | series= | issue= | year=2004 | isbn=978-7-80122-518-4 | url=https://books.google.com/books?id=wXg6AAAAMAAJ | language= | access-date= | page=}}</ref> is a [[tributary]] of [[Wei River]]<ref>{{cite web |url=https://scjg.cnki.net/kcms/detail/detail.aspx?filename=STTB202104001&dbcode=CJFQ&dbname=CJFDTEMP&v=|title=Changes in hydrological situation of river runoff in typical watersheds of Loess Plateau and its attribution analysis|author=|date=2021-04-09|accessdate=|work=CNKI}}</ref> and is located in central Gansu Province.<ref>{{cite book | title=The Dictionary of Gansu | publisher=Gansu Culture Press | year=2000 | isbn=978-7-80608-547-9 | url=https://books.google.com/books?id=-g7lAAAAMAAJ | language= | access-date= | page=}}</ref> The river, whose upstream is the Niugu River,<ref name="Ren 2007 p. ">{{cite book | last=Ren | first=L. | title=Methodology in Hydrology | publisher=IAHS Press | series= | year=2007 | isbn=978-1-901502-93-0 | url=https://books.google.com/books?id=qW5FAAAAYAAJ | access-date= | page=}}</ref> originates at the southern foot of Niuying Mountain in the northwest of [[Tongwei County]]. It is 119.4 kilometers long and has a catchment area of 980.47 square kilometers.', 70 => '==References==', 71 => '{{reflist}}', 72 => '', 73 => '[[Category:Rivers of Gansu]]', 74 => '[[Category:Geography of Gansu]]' ]