UNION ISLAND INSET (Marine Chart : US18661_P1854)

UNION ISLAND INSET 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 UNION ISLAND INSET 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-121.62
Min Latitude37.75
Max Longitude-121.29
Max Latitude37.95
Edition Label 130
Edition Label 21
Edition Label 3172
* some Stats may include nearby/connecting waterbodies
Nearby Tide Station Grant Line Canal (drawbridge)
Distance from center: 2 km
Weekly High / Low Tide Table
08/11Thu01:29 AM48.38L cm
08/11Thu07:09 AM137.07H cm
08/11Thu03:19 PM-6.386L cm
08/11Thu09:23 PM101.398H cm
08/12Fri02:33 AM43.723L cm
08/12Fri08:07 AM134.877H cm
08/12Fri04:01 PM-6.778L cm
08/12Fri10:06 PM103.795H cm
08/13Sat03:32 AM37.879L cm
08/13Sat09:03 AM129.799H cm
08/13Sat04:40 PM-5.316L cm
08/13Sat10:47 PM105.56H cm
08/14Sun04:29 AM31.969L cm
08/14Sun09:58 AM121.997H cm
08/14Sun05:16 PM-2.001L cm
08/14Sun11:25 PM106.9H cm
08/15Mon05:24 AM26.9L cm
08/15Mon10:53 AM112.019H cm
08/15Mon05:50 PM3.134L cm
08/16Tue12:01 AM107.911H cm
08/16Tue06:21 AM23.175L cm
08/16Tue11:53 AM100.885H cm
08/16Tue06:24 PM9.973L cm

Marine Wind Meteogram for Lake/Chart

For real time, interactive Marine Wind prediction, download App
Date/TimeSpeed *Dir *
08/12 Fri 06:00AM4.7369.49
08/12 Fri 09:00AM3.2175.32
08/12 Fri 12:00PM2.6786.84
08/12 Fri 03:00PM2.33111.65
08/12 Fri 06:00PM3.54130.69
08/12 Fri 09:00PM5.8102.08
08/13 Sat 12:00AM8.6682.31
08/13 Sat 03:00AM6.1775.63
08/13 Sat 06:00AM4.8570.09
08/13 Sat 09:00AM3.0380.48
08/13 Sat 12:00PM2.3988.86
08/13 Sat 03:00PM2.31121.64
08/13 Sat 06:00PM2.84144.94
08/13 Sat 09:00PM4.89110.36
08/14 Sun 12:00AM7.9879.68
08/14 Sun 03:00AM6.675.37
08/14 Sun 06:00AM4.772.03
08/14 Sun 09:00AM2.883.38
08/14 Sun 12:00PM2.6991.02
08/14 Sun 03:00PM2129.44
08/14 Sun 06:00PM3.17143.26
08/14 Sun 09:00PM3.83138.49
08/15 Mon 12:00AM6.3998.34
08/15 Mon 03:00AM5.271.83
08/15 Mon 06:00AM4.5266.96
08/15 Mon 09:00AM2.2678.15
08/15 Mon 12:00PM1.9495.68
08/15 Mon 03:00PM2.08120.5
08/15 Mon 06:00PM3.27151.1
08/15 Mon 09:00PM3.52144.21
08/16 Tue 12:00AM6.24105.97
08/16 Tue 03:00AM4.9170.51
* : UTC Timezone, Speed in meters per sec, and True Direction