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
09/25Mon03:54 AM112.397H cm
09/25Mon12:18 PM-0.104L cm
09/25Mon06:30 PM91.948H cm
09/25Mon11:38 PM39.322L cm
09/26Tue05:15 AM113.994H cm
09/26Tue01:05 PM-3.215L cm
09/26Tue07:11 PM96.72H cm
09/27Wed12:43 AM30.091L cm
09/27Wed06:22 AM115.605H cm
09/27Wed01:46 PM-3.648L cm
09/27Wed07:48 PM101.223H cm
09/28Thu01:41 AM20.902L cm
09/28Thu07:22 AM115.326H cm
09/28Thu02:25 PM-1.318L cm
09/28Thu08:22 PM105.683H cm
09/29Fri02:35 AM12.961L cm
09/29Fri08:19 AM112.66H cm
09/29Fri03:00 PM3.378L cm
09/29Fri08:54 PM110.118H cm
09/30Sat03:28 AM6.942L cm
09/30Sat09:14 AM108.012H cm
09/30Sat03:35 PM9.795L cm
09/30Sat09:25 PM114.215H cm

Marine Wind Meteogram for Lake/Chart

For real time, interactive Marine Wind prediction, download App
Date/TimeSpeed *Dir *
09/27 Wed 12:00AM5.95113.37
09/27 Wed 03:00AM3.9373.7
09/27 Wed 06:00AM3.9561.04
09/27 Wed 09:00AM3.2567.5
09/27 Wed 12:00PM2.9784.31
09/27 Wed 03:00PM2.1489.13
09/27 Wed 06:00PM3.73126.32
09/27 Wed 09:00PM5.24129.24
09/28 Thu 12:00AM7.7379.47
09/28 Thu 03:00AM6.5462.79
09/28 Thu 06:00AM4.6569.91
09/28 Thu 09:00AM2.8183.71
09/28 Thu 12:00PM2.6679.87
09/28 Thu 03:00PM2.8786.55
09/28 Thu 06:00PM4.57139.28
09/28 Thu 09:00PM4.23136.82
09/29 Fri 12:00AM4.1122.5
09/29 Fri 03:00AM4.1662.13
09/29 Fri 06:00AM3.6564.35
09/29 Fri 09:00AM2.0968.2
09/29 Fri 12:00PM2.1186.76
09/29 Fri 03:00PM2.1685.98
09/29 Fri 06:00PM5.1188.19
09/29 Fri 09:00PM9.6775.33
09/30 Sat 12:00AM10.0673
09/30 Sat 03:00AM8.2563.69
09/30 Sat 06:00AM6.1164.75
09/30 Sat 09:00AM5.0864.85
09/30 Sat 12:00PM2.741.84
09/30 Sat 03:00PM0.9739.78
09/30 Sat 06:00PM2.5983.85
09/30 Sat 09:00PM4.4694.53
* : UTC Timezone, Speed in meters per sec, and True Direction