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
05/22Sun03:05 AM94.569H cm
05/22Sun08:20 AM40.492L cm
05/22Sun01:25 PM97.701H cm
05/22Sun09:27 PM-5.109L cm
05/23Mon03:58 AM98.481H cm
05/23Mon09:40 AM32.511L cm
05/23Mon03:04 PM88.566H cm
05/23Mon10:19 PM-2.681L cm
05/24Tue04:47 AM103.176H cm
05/24Tue10:53 AM22.409L cm
05/24Tue04:27 PM84.055H cm
05/24Tue11:07 PM1.046L cm
05/25Wed05:30 AM107.889H cm
05/25Wed11:58 AM12.264L cm
05/25Wed05:35 PM82.273H cm
05/25Wed11:50 PM6.608L cm
05/26Thu06:08 AM111.893H cm
05/26Thu12:55 PM3.909L cm
05/26Thu06:35 PM81.889H cm
05/27Fri12:28 AM14.023L cm
05/27Fri06:42 AM114.816H cm
05/27Fri01:47 PM-1.729L cm
05/27Fri07:31 PM82.361H cm

Marine Wind Meteogram for Lake/Chart

For real time, interactive Marine Wind prediction, download App
Date/TimeSpeed *Dir *
05/23 Mon 06:00AM4.3261.41
05/23 Mon 09:00AM3.3779.46
05/23 Mon 12:00PM3.8569.79
05/23 Mon 03:00PM3.81100.22
05/23 Mon 06:00PM5.97136.03
05/23 Mon 09:00PM6.35128.2
05/24 Tue 12:00AM7.8787.2
05/24 Tue 03:00AM5.3561.61
05/24 Tue 06:00AM4.8563.64
05/24 Tue 09:00AM2.4589.88
05/24 Tue 12:00PM3.5276.86
05/24 Tue 03:00PM5.11129.3
05/24 Tue 06:00PM5.33141.84
05/24 Tue 09:00PM5.39149.52
05/25 Wed 12:00AM5.42146.32
05/25 Wed 03:00AM4.4962.99
05/25 Wed 06:00AM4.4758.97
05/25 Wed 09:00AM1.184.1
05/25 Wed 12:00PM1.9773.73
05/25 Wed 03:00PM3.36134.04
05/25 Wed 06:00PM4.19142.38
05/25 Wed 09:00PM4.46123.25
05/26 Thu 12:00AM7.9876.48
05/26 Thu 03:00AM5.2173.55
05/26 Thu 06:00AM3.7666.2
05/26 Thu 09:00AM2.4677.55
05/26 Thu 12:00PM2.9381.81
05/26 Thu 03:00PM2.51107.01
05/26 Thu 06:00PM3.56106.22
05/26 Thu 09:00PM8.4485.17
05/27 Fri 12:00AM7.5175.76
05/27 Fri 03:00AM5.7570.19
* : UTC Timezone, Speed in meters per sec, and True Direction