NORTHWEST RIVER EXTENSION marine chart is available as part of iBoating : USA Marine & Fishing App(now supported on multiple platforms including Android, iPhone/iPad, MacBook, and Windows(tablet and phone)/PC based chartplotter.).  

 When you purchase our Nautical Charts App,  you get all the great marine chart app features like fishing spots, along with NORTHWEST RIVER EXTENSION marine chart. The Marine Navigation App provides advanced features of a Marine Chartplotter including adjusting water level offset and custom depth shading. Fishing spots and depth contours layers are available in most Lake maps. Nautical navigation features include advanced instrumentation to gather wind speed direction, water temperature, water depth, and accurate GPS with AIS receivers(using NMEA over TCP/UDP). Autopilot support can be enabled during ‘Goto WayPoint’ and ‘Route Assistance’. Now Automatic Slip to Slip Boat routing based Boat's Draft (draught) is available for water mapped by this chart.


Have more questions about the Nautical Chart App? Ask us.



Min Longitude-76.18
Min Latitude36.49
Max Longitude-76.02
Max Latitude36.58
Edition Label 134
Edition Label 21
Edition Label 363
* some Stats may include nearby/connecting waterbodies
Nearby Tide Station Buchanan Creek entrance
Distance from center: 9 km
Weekly High / Low Tide Table
06/30Thu06:52 AM4.818L cm
06/30Thu12:01 PM51.337H cm
06/30Thu06:39 PM7.137L cm
07/01Fri12:13 AM63.806H cm
07/01Fri07:27 AM5.295L cm
07/01Fri12:37 PM51.601H cm
07/01Fri07:18 PM8.003L cm
07/02Sat12:49 AM62.419H cm
07/02Sat08:02 AM5.839L cm
07/02Sat01:15 PM51.882H cm
07/02Sat07:59 PM9.043L cm
07/03Sun01:26 AM60.763H cm
07/03Sun08:38 AM6.253L cm
07/03Sun01:53 PM52.499H cm
07/03Sun08:42 PM10.113L cm
07/04Mon02:04 AM58.874H cm
07/04Mon09:16 AM6.374L cm
07/04Mon02:35 PM53.727H cm
07/04Mon09:29 PM11.013L cm
07/05Tue02:45 AM56.81H cm
07/05Tue09:57 AM6.118L cm
07/05Tue03:20 PM55.71H cm
07/05Tue10:21 PM11.473L cm

Marine Wind Meteogram for Lake/Chart

For real time, interactive Marine Wind prediction, download App
Date/TimeSpeed *Dir *
07/01 Fri 12:00PM2.217.72
07/01 Fri 03:00PM4332.46
07/01 Fri 06:00PM6.15317.87
07/01 Fri 09:00PM6.47326.14
07/02 Sat 12:00AM4.8313.11
07/02 Sat 03:00AM5.4341.39
07/02 Sat 06:00AM5.5141.42
07/02 Sat 09:00AM4.5355.92
07/02 Sat 12:00PM4.8444.06
07/02 Sat 03:00PM5.421.28
07/02 Sat 06:00PM6.05345.16
07/02 Sat 09:00PM6.81.73
07/03 Sun 12:00AM7.0110.57
07/03 Sun 03:00AM5.8721.37
07/03 Sun 06:00AM4.2834.36
07/03 Sun 09:00AM3.7245.45
07/03 Sun 12:00PM3.6356.5
07/03 Sun 03:00PM2.1996.41
07/03 Sun 06:00PM4.64233.21
07/03 Sun 09:00PM3.15264.05
07/04 Mon 12:00AM2.21295.47
07/04 Mon 03:00AM1.31167.89
07/04 Mon 06:00AM2.94224.66
07/04 Mon 09:00AM3.18235.81
07/04 Mon 12:00PM4.43225.65
07/04 Mon 03:00PM5.3235.96
07/04 Mon 06:00PM4.79244.89
07/04 Mon 09:00PM4.28259.94
07/05 Tue 12:00AM3244.8
07/05 Tue 03:00AM2.78274.09
07/05 Tue 06:00AM2.31308.45
07/05 Tue 09:00AM1.8343.08
* : UTC Timezone, Speed in meters per sec, and True Direction