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HomeStreamfinder Maryland
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3 - CENTRAL MARYLAND & D.C. ß USGS Map
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Stream
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Class
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Sq Miles
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Page
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Gauge
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Min cfs
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Rain Gauges/Notes
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CABIN JOHN CK
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3- (3)
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18
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196
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Fourmile/ Sligo /Paint Br
Accotink / NW Branch
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75 / 33 / 72
125 / 100
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Fourmile (USGS)
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SENECA CK
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1
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101
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186
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Dawsonville
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85
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Little Seneca
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2 (2+)
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21
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188
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400
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Paint Br
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2 (3)
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8
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233
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Paint Br
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140
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Indian Ck [Prince Georges]
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Sligo Ck
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3- (3+)
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3, 11
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229
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Sligo
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140
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Fourmile (USGS)
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ROCK CK
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Fall Line
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3
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67
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211
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Sherrill Dr
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160
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below Peirce Mill
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2-
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100
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Morgan Run
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3+ (3-)
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23
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72
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NW Br @ Colesville
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100
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Columbia
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Northwest Br
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3 (5) 1
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26
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228
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NW Br @ Colesville
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250
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Earlier: Sligo Ck 75
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LITTLE PATUXENT
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3- (4)
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38
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84
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Guilford
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125
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Savage
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225
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PATAPSCO So. Br. – Gaither Gorge
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3-
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32
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73
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Cedarhurst
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150
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Lisbon rain gauge
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Beaver Run
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40
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Patuxent @ Unity
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90
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PATAPSCO So. Br - Berkshire Rd
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2 (4)
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49
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73
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Cedarhurst
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150
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Beaver Run
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40
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Patuxent @ Unity
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90
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PATAPSCO So. Br. – Confluence w/ North Branch
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2
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60
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56
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Cedarhurst
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100
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Beaver Run
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25
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Patuxent @Unity
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60
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Little Catoctin Ck
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3 (4)
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9
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134
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Catoctin
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700, lag 3 hr
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Lovettsville, VA (USGS)
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Piney (VA)
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150 lag 1 hr
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ANTIETAM
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§1 - Waynesboro
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1 (2+)
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91
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121
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Waynesboro
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175
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§2 - Funkstown
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2
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182
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121
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Waynesboro
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140
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Sharpsburg
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190
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§3 Devils Backbone
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2
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201
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121
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Sharpsburg
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150
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to the Potomac
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E. Branch, Antietam
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12
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123
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Waynesboro
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600
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3-
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Catoctin
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400
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Bermudian Ck (PA)
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60
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Potomac – NEEDLES
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2
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6,311
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178
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Point of Rocks minus Millville = 500
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Potomac – Whitehorse Rapid
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2
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9,500
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Point of Rocks
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Point of Rocks value, minus 1,000
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THE STAIRCASE
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2+
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3,058
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325
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Millville
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1.7’ - 1,000
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Lower
POTOMAC
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GW Canal
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2-
2 (3)
3
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11,385
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179
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Little Falls
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500
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Mather Gorge
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181
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500
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LITTLE FALLS
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182
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250
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FOR TIDES go to Chain Bridge, near bottom
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4 - NORTH CENTRAL MARYLAND Frederick Co, Monocacy Tribs + Catoctin
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Stream
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Class
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Sq Miles
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Page
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Gauge
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Min cfs
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Rain Gauges/Notes
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Friends Ck § 3
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3+
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12
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154
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Middletown
(67 sq mi)
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550 – lag 4 hr
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Lovettsville (USGS)
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Owens Ck
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§1
§3
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3+ (4)
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5
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156
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1,000 – lag 4 hr
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3+
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11
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158
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550 – lag 3 hr
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Middle Ck PA/MD § 3
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3 (4-)
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21
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158
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550 – lag 3 hr
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Hunting Ck
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§ 1
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3
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8
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159
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800 – lag 2 hr
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§ 3
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3
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11
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160
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600 – lag 2 hr
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CATOCTIN
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Middle
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§ 1
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4- (4=0)
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12
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136
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600 – lag 4 hr
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Class IV
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Creek
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§ 2
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2+
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21
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136
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300 – lag 4 hr
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Lower
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2-
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35
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135
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200, 150
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