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, Relief Shading 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
06/14Fri03:32 AM95.528H cm
06/14Fri09:37 AM29.756L cm
06/14Fri02:41 PM73.602H cm
06/14Fri09:09 PM9.694L cm
06/15Sat04:09 AM98.365H cm
06/15Sat10:44 AM21.756L cm
06/15Sat04:06 PM69.284H cm
06/15Sat09:45 PM16.547L cm
06/16Sun04:40 AM102.604H cm
06/16Sun11:45 AM13.914L cm
06/16Sun05:19 PM69.213H cm
06/16Sun10:22 PM24.62L cm
06/17Mon05:06 AM108.051H cm
06/17Mon12:41 PM7.284L cm
06/17Mon06:24 PM72.037H cm
06/17Mon11:01 PM33.334L cm
06/18Tue05:27 AM114.491H cm
06/18Tue01:32 PM2.412L cm
06/18Tue07:24 PM76.394H cm
06/18Tue11:42 PM41.853L cm
06/19Wed05:51 AM121.379H cm
06/19Wed02:19 PM-0.818L cm
06/19Wed08:21 PM81.161H cm

Marine Wind Meteogram for Lake/Chart

For real time, interactive Marine Wind prediction, download App
Date/TimeSpeed *Dir *
06/15 Sat 12:00PM3.5884.8
06/15 Sat 03:00PM3.94103.02
06/15 Sat 06:00PM4.79118.71
06/15 Sat 09:00PM5.02124.29
06/16 Sun 12:00AM7.9385.22
06/16 Sun 03:00AM6.2571.03
06/16 Sun 06:00AM4.9368.44
06/16 Sun 09:00AM4.4772.17
06/16 Sun 12:00PM3.6970.02
06/16 Sun 03:00PM3.72104.04
06/16 Sun 06:00PM4.56128.88
06/16 Sun 09:00PM6.9391.68
06/17 Mon 12:00AM9.4576.93
06/17 Mon 03:00AM8.7963.95
06/17 Mon 06:00AM6.6465.72
06/17 Mon 09:00AM4.6466.85
06/17 Mon 12:00PM3.9776.05
06/17 Mon 03:00PM7.15140.18
06/17 Mon 06:00PM9.13146.8
06/17 Mon 09:00PM8.74152.01
06/18 Tue 12:00AM8.69148.71
06/18 Tue 03:00AM5.2265.77
06/18 Tue 06:00AM4.9358.7
06/18 Tue 09:00AM4.1167.57
06/18 Tue 12:00PM3.7172.82
06/18 Tue 03:00PM4.41126.38
06/18 Tue 06:00PM4.8142.22
06/18 Tue 09:00PM3.9122.96
06/19 Wed 12:00AM9.1180.08
06/19 Wed 03:00AM6.8563.61
06/19 Wed 06:00AM6.963.21
06/19 Wed 09:00AM4.7668.9
* : UTC Timezone, Speed in meters per sec, and True Direction