List of rivers of Wiltshire

This is a list of rivers and natural waterways that flow either wholly or partially through the ceremonial county of Wiltshire. The list is not comprehensive as there are many small brooks and streams without a recorded name on most official maps. There are three notable rivers that flow through the county: the River Avon (Bristol), the River Avon (Hampshire) and the River Thames.

Due to the geology of the county, the rivers and waterways discharge to the west, east and south. In addition to the natural waterways, the Kennet and Avon Canal crosses the county.

Name	Source	Mouth	Image
Bristol Avon	Acton Turville 51°31′49″N 2°16′26″W / 51.53028°N 2.27389°W / 51.53028; -2.27389	Severn Estuary, Avonmouth, Bristol 51°30′22″N 2°43′06″W / 51.50611°N 2.71833°W / 51.50611; -2.71833
Hampshire Avon	Pewsey, Wiltshire 51°22′10″N 1°41′42″W / 51.36944°N 1.69500°W / 51.36944; -1.69500	English Channel, Mudeford, Dorset 50°43′23″N 1°44′53″W / 50.72306°N 1.74806°W / 50.72306; -1.74806
Biss	near Upton Scudamore, Wiltshire 51°13′42″N 2°11′40″W / 51.22833°N 2.19444°W / 51.22833; -2.19444	River Avon at Staverton, Wiltshire 51°20′12″N 2°12′56″W / 51.33667°N 2.21556°W / 51.33667; -2.21556
Blackwater	Redlynch, Wiltshire 50°59′23″N 1°42′44″W / 50.98972°N 1.71222°W / 50.98972; -1.71222	Totton, Hampshire 50°55′36″N 1°29′31″W / 50.92667°N 1.49194°W / 50.92667; -1.49194
Bourne	Burbage 51°21′09″N 1°40′17″W / 51.35250°N 1.67139°W / 51.35250; -1.67139	Salisbury 51°03′44″N 1°47′22″W / 51.06222°N 1.78944°W / 51.06222; -1.78944
Broadmead Brook	west of Marshfield, Gloucestershire 51°27′24″N 2°21′45″W / 51.45667°N 2.36250°W / 51.45667; -2.36250	Bybrook River north west of Castle Combe 51°29′54″N 2°14′13″W / 51.49833°N 2.23694°W / 51.49833; -2.23694
Brinkworth Brook	Broad Hinton, Wiltshire 51°30′7.92″N 1°52′24.6″W / 51.5022000°N 1.873500°W / 51.5022000; -1.873500	Bristol Avon, Great Somerford, Wiltshire 51°32′43.44″N 2°2′17.52″W / 51.5454000°N 2.0382000°W / 51.5454000; -2.0382000
Bybrook River	Prime: Lower Lapdown Farm, Tormarton, South Gloucestershire 51°29′53.88″N 2°20′34.44″W / 51.4983000°N 2.3429000°W / 51.4983000; -2.3429000 Secondary: Folly Farm, Cold Ashton, South Gloucestershire 51°27′23.4″N 2°21′43.56″W / 51.456500°N 2.3621000°W / 51.456500; -2.3621000	Bristol Avon, Batheaston 51°24′5.76″N 2°18′36.72″W / 51.4016000°N 2.3102000°W / 51.4016000; -2.3102000
Bydemill Brook	Stanton Country Park, south of Stanton Fitzwarren 51°36′01″N 1°44′50″W / 51.600328°N 1.747239°W / 51.600328; -1.747239	confluence with River Thames 51°40′11″N 1°43′10″W / 51.669759°N 1.719348°W / 51.669759; -1.719348
Chalke	Mead End, near Bowerchalke, Wiltshire 51°0′44″N 1°57′56″W / 51.01222°N 1.96556°W / 51.01222; -1.96556	confluence with River Ebble at Broad Chalke 51°1′35″N 1°57′27″W / 51.02639°N 1.95750°W / 51.02639; -1.95750
River Churn	Seven Springs, Gloucestershire 51°51′4″N 2°3′1″W / 51.85111°N 2.05028°W / 51.85111; -2.05028	confluence with River Thames 51°39′14″N 1°51′12″W / 51.65389°N 1.85333°W / 51.65389; -1.85333
Cocklemore Brook	Studley, Wiltshire 51°25′2″N 2°4′6″W / 51.41722°N 2.06833°W / 51.41722; -2.06833	River Avon (Bristol) south of Chippenham 51°25′56″N 2°6′7″W / 51.43222°N 2.10194°W / 51.43222; -2.10194
Cole	Wanborough, Wiltshire 51°32′34″N 1°41′54″W / 51.54278°N 1.69833°W / 51.54278; -1.69833	River Thames 51°41′19″N 1°4′37″W / 51.68861°N 1.07694°W / 51.68861; -1.07694
Damson Brook	Milston 51°12′22″N 1°46′08″W / 51.20611°N 1.76889°W / 51.20611; -1.76889	confluence with Nine Mile River 51°11′20″N 1°45′36″W / 51.18889°N 1.76000°W / 51.18889; -1.76000	No picture available
Derry Brook	Ravensroost Wood, Minety Common 51°35′43″N 1°58′23″W / 51.595278°N 1.973032°W / 51.595278; -1.973032	confluence with Swill Brook south of Ashton Keynes 51°38′17″N 1°55′20″W / 51.638041°N 1.922296°W / 51.638041; -1.922296	No picture available
Doncombe Brook	south of Marshfield, Gloucestershire 51°27′33″N 2°18′45″W / 51.459253°N 2.312498°W / 51.459253; -2.312498	confluence with Bybrook River at Ford 51°28′14″N 2°14′01″W / 51.470562°N 2.233651°W / 51.470562; -2.233651
River Dun (River Kennet)	Great Bedwyn 51°22′16″N 1°36′25″W / 51.37111°N 1.60694°W / 51.37111; -1.60694	River Kennet near Hungerford 51°24′44″N 1°29′39″W / 51.41222°N 1.49417°W / 51.41222; -1.49417
River Dun (River Test)	51°3′12.05″N 1°40′57.62″W / 51.0533472°N 1.6826722°W / 51.0533472; -1.6826722	Confluence with River Test near Kimbridge in Hampshire 51°01′50″N 1°32′01″W / 51.030672°N 1.533504°W / 51.030672; -1.533504
River Ebble	Alvediston 51°00′46″N 2°02′20″W / 51.0127°N 2.039°W / 51.0127; -2.039	confluence with River Avon 51°02′00″N 1°45′30″W / 51.0334°N 1.7582°W / 51.0334; -1.7582
Gauze Brook	Littleton Drew 51°31′35″N 2°14′21″W / 51.5265°N 2.2391°W / 51.5265; -2.2391	River Avon (Bristol) south of Malmesbury 51°33′44″N 2°04′49″W / 51.5623°N 2.0802°W / 51.5623; -2.0802
River Kennet	Swallowhead Spring near Silbury Hill 51°30′10″N 1°50′42″W / 51.50276°N 1.84507°W / 51.50276; -1.84507	confluence with River Thames at Reading 51°27′33″N 0°56′58″W / 51.459148°N 0.94947°W / 51.459148; -0.94947
Key	Braydon Forest near Purton 51°35′11″N 1°51′57″W / 51.58639°N 1.86583°W / 51.58639; -1.86583	confluence with River Thames near Cricklade 51°38′22″N 1°51′27″W / 51.63944°N 1.85750°W / 51.63944; -1.85750
Lambrok Stream	Hoopers Pool between Southwick and Rode 51°17′07″N 2°14′57″W / 51.285141°N 2.249281°W / 51.285141; -2.249281	confluence with River Biss at Trowbridge 51°19′18″N 2°13′14″W / 51.321743°N 2.220678°W / 51.321743; -2.220678
River Marden	Ranscombe Bottom, Calstone Wellington, near Calne 51°24′56″N 2°0′48″W / 51.41556°N 2.01333°W / 51.41556; -2.01333	Bristol Avon near Chippenham 51°27′56″N 2°05′33″W / 51.46556°N 2.09250°W / 51.46556; -2.09250
River Nadder	Springs at Nadder Head near Donhead St Mary 51°01′01″N 2°10′33″W / 51.016951°N 2.175815°W / 51.016951; -2.175815	Confluence with River Avon (Hampshire) in Salisbury 51°03′38″N 1°47′58″W / 51.060677°N 1.799525°W / 51.060677; -1.799525
Nine Mile	Brigmerston Down northeast of Bulford Camp 51°13′34″N 1°42′51″W / 51.226017°N 1.714214°W / 51.226017; -1.714214	Confluence of River Avon at Bulford 51°11′20″N 1°46′07″W / 51.188797°N 1.768739°W / 51.188797; -1.768739
Oddford Brook	Bitham Lake northwest of Tisbury 51°04′26″N 2°06′58″W / 51.073844°N 2.116175°W / 51.073844; -2.116175	confluence with River Nadder at Tisbury 51°03′39″N 2°04′55″W / 51.060750°N 2.082072°W / 51.060750; -2.082072	No picture available
River Og	Draycot Foliat 51°29′53″N 1°44′25″W / 51.49806°N 1.74028°W / 51.49806; -1.74028	River Kennet near Marlborough 51°25′13″N 1°43′43″W / 51.42028°N 1.72861°W / 51.42028; -1.72861
River Ray	Wroughton 51°31′24″N 1°47′29″W / 51.52333°N 1.79139°W / 51.52333; -1.79139	Confluence with River Thames 51°38′39″N 1°49′20″W / 51.64417°N 1.82222°W / 51.64417; -1.82222
River Sem	near Sedgehill 51°02′51″N 2°11′04″W / 51.047620°N 2.184409°W / 51.047620; -2.184409	near Wardour 51°02′45″N 2°06′37″W / 51.045790°N 2.110142°W / 51.045790; -2.110142	No picture available
Semington Brook	The Warren south of West Lavington 51°15′53″N 1°59′46″W / 51.264651°N 1.996125°W / 51.264651; -1.996125	confluence with River Avon (Bristol) near Whaddon 51°21′11″N 2°10′19″W / 51.353071°N 2.171855°W / 51.353071; -2.171855
River Stour, Dorset	Stourhead 51°06′17″N 2°19′36″W / 51.104584°N 2.326786°W / 51.104584; -2.326786	English Channel at Christchurch, Dorset 50°43′41″N 1°46′23″W / 50.72796°N 1.77295°W / 50.72796; -1.77295
Summerham Brook	north of Rowde 51°21′39″N 2°00′51″W / 51.360947°N 2.014142°W / 51.360947; -2.014142	confluence with Semington Brook, south of Seend Cleeve 51°19′56″N 2°05′54″W / 51.332359°N 2.098262°W / 51.332359; -2.098262
Swill Brook	confluence of Braydon Brook and Flagham Brook near Somerford Keynes 51°38′19″N 1°58′36″W / 51.638517°N 1.976646°W / 51.638517; -1.976646	confluence with River Thames at Ashton Keynes 51°38′20″N 1°55′25″W / 51.638890°N 1.923656°W / 51.638890; -1.923656
Tetbury Avon	Wor Well, Tetbury 51°38′36″N 2°08′33″W / 51.6432°N 2.1424°W / 51.6432; -2.1424	River Avon (Bristol) at Malmesbury 51°34′56″N 2°05′34″W / 51.5821°N 2.09289°W / 51.5821; -2.09289
Thames	enters Wiltshire to the east of Ashton Keynes	leaves Wiltshire to the southwest of Lechlade-on-Thames
Till	near Tilshead 51°13′49″N 1°57′21″W / 51.23028°N 1.95583°W / 51.23028; -1.95583	confluence with River Wylye near Stapleford 51°08′09″N 1°54′07″W / 51.13583°N 1.90194°W / 51.13583; -1.90194
Woodbridge Brook	Midgehall Copse near Lydiard Millicent 51°33′38″N 1°54′41″W / 51.5605°N 1.9115°W / 51.5605; -1.9115	confluence with River Avon (Bristol) near Malmesbury	No picture available
Wylye	Rodmead Farm near Maiden Bradley 51°07′25″N 2°18′11″W / 51.12361°N 2.30306°W / 51.12361; -2.30306	Confluence with River Nadder 51°04′45″N 1°51′45″W / 51.07917°N 1.86250°W / 51.07917; -1.86250