23041. River Ogwen (53.23N, 4.08W) , Stream 23042. River Ogwr (51.47N, 3.63W) , Stream 23043. River Oich (57.13N, 4.87W) , Stream 23044. River Okement (50.85N, 4.05W) , Stream 23045. River Orchy (56.42N, 4.93W) , Stream 23046. River Ore (52.03N, 1.47E) , Stream 23047. River Ore (56.18N, 3.07W) , Stream 23048. River Orrin (57.53N, 4.67W) , Stream 23049. River Orwell (51.97N, 1.3E) , Stream 23050. River Otter (50.63N, 3.3W) , Stream 23051. River Ottery (50.65N, 4.33W) , Stream 23052. River Ouse (50.77N, 0.05E) , Stream 23053. River Ouse (52.78N, 0.38E) , Stream 23054. River Ouse (53.72N, 0.7W) , Stream 23055. River Ouzel (52.07N, 0.72W) , Stream 23056. River Oykell (57.93N, 4.42W) , Stream 23057. River Pant (51.88N, 0.65E) , Stream 23058. River Parrett (51.17N, 3.05W) , Stream 23059. River Pattack (56.98N, 4.4W) , Stream 23060. River Pean (56.97N, 5.32W) , Stream 23061. River Penk (52.8N, 2.08W) , Stream 23062. River Perddyn (51.77N, 3.6W) , Stream 23063. River Petteril (54.9N, 2.92W) , Stream 23064. River Petterill (54.9N, 2.92W) , Stream 23065. River Plym (50.37N, 4.12W) , Stream 23066. River Polly (58.07N, 5.28W) , Stream 23067. River Pont (55.08N, 1.72W) , Stream 23068. River Prysor (52.9N, 3.93W) , Stream 23069. River Quaich (56.52N, 3.87W) , Stream 23070. River Rawthey (54.3N, 2.57W) , Stream 23071. River Rea (52.5N, 1.82W) , Stream 23072. River Reasort (58.03N, 6.88W) , Stream 23073. River Rede (55.13N, 2.2W) , Stream 23074. River Rhaiadr (52.8N, 3.28W) , Stream 23075. River Rhiw (52.58N, 3.2W) , Stream 23076. River Rhymney (51.45N, 3.15W) , Stream 23077. River Rib (51.8N, 0.07W) , Stream 23078. River Ribble (53.75N, 2.77W) , Stream 23079. River Rivelin (53.4N, 1.5W) , Stream 23080. River Roach (51.6N, 0.87E) , Stream | 23081. River Roch (53.57N, 2.3W) , Stream 23082. River Roden (52.72N, 2.58W) , Stream 23083. River Roding (51.52N, 0.12E) , Stream 23084. River Roe (55.07N, 7W) , Stream 23085. River Roeburn (54.1N, 2.6W) , Stream 23086. River Romesdal (57.5N, 6.3W) , Stream 23087. River Ronach (56.57N, 5.73W) , Stream 23088. River Rothay (54.42N, 2.97W) , Stream 23089. River Rother (50.9N, 0.7E) , Stream 23090. River Rother (50.95N, 0.53W) , Stream 23091. River Rother (53.43N, 1.37W) , Stream 23092. River Ruel (55.97N, 5.18W) , Stream 23093. River Rye (54.15N, 0.72W) , Stream 23094. River Saint Germans (50.4N, 4.27W) , Stream 23095. River Salcombe (50.22N, 3.77W) , Stream 23096. River Sark (54.97N, 3.07W) , Stream 23097. River Sawdde (51.93N, 3.9W) , Stream 23098. River Seiont (53.15N, 4.27W) , Stream 23099. River Seph (54.28N, 1.15W) , Stream 23100. River Seven (54.18N, 0.85W) , Stream 23101. River Severn (51.6N, 2.63W) , Stream 23102. River Shalachie (57.85N, 4.53W) , Stream 23103. River Sheaf (53.38N, 1.47W) , Stream 23104. River Shevock (57.35N, 2.55W) , Stream 23105. River Shiel (56.75N, 5.78W) , Stream 23106. River Shiel (57.2N, 5.42W) , Stream 23107. River Shin (57.93N, 4.42W) , Stream 23108. River Shira (56.23N, 5.05W) , Stream 23109. River Shrule (54.72N, 7.37W) , Stream 23110. River Sid (50.68N, 3.23W) , Stream 23111. River Skell (54.13N, 1.55W) , Stream 23112. River Skerne (54.48N, 1.55W) , Stream 23113. River Skiack (57.65N, 4.32W) , Stream 23114. River Skiak (57.65N, 4.32W) , Stream 23115. River Skinsdale (58.12N, 4.08W) , Stream 23116. River Skirfare (54.1N, 2.03W) , Stream 23117. River Snizort (57.47N, 6.35W) , Stream 23118. River Soar (52.87N, 1.28W) , Stream 23119. River Sorn (55.77N, 6.25W) , Stream 23120. River South Esk (55.92N, 3.05W) , Stream |