• Save


The left window is a Google map, with pushpin icons at kayak put-ins, tide stations, and other points of interest. There are standard Google Maps controls near the top of the map.
  • Zoom/Pan Controls (upper left side of the map):
    • Drag the slider bar up to zoom in and down to zoom out.
    • Click the + button at the top of the slider to zoom in.
    • Click the button at the bottom of the slider to zoom out.
    • Click any of the arrow buttons to move the view in the direction of the arrow.
    • Using the scroll wheel will allow you to zoom in and out.
  • Map Type Buttons (upper right side of the map):
    • Map: Map view with streets and highways.
    • Satellite: Satellite image. Click it and you'll get a checkbox which controls whether streets and highways are shown.
    • Terrain: Shaded relief map with main street/highway overlay.
    • Traffic: This shows the current traffic conditions of major highways.
  • Drag Mouse: Drag the map view to a new location by placing the mouse over any part of the map, pressing and holding down the left mouse button, and dragging the mouse across the page.
  • Overview: In the upper-left corner of the map is pan control. Press an arrow in the circle and the map will move that direction.
  • Click Icon: Click any icon and it will move to the center of the map. Click it again and a brief description of the location will pop up.
  • Show or Hide Icons: Click an icon in the map key beneath the map to hide all icons of that type; click it again to show them.
    • Tides: Tide height prediction stations.
    • Currents: Tidal current prediction stations.
    • Put-Ins: Kayak access points.
    • Destinations: Interesting places to go in your kayak.
    • Meeting Places: Places on land where kayakers meet.
    • Aerial Photo (normally hidden - click to show): There is only one Aerial Photo icon, but you can drag it anywhere on the map. A thumbnail-sized aerial photo of the nearby coastline will pop up. Click on the thumbnail to open a new window with a larger image. Photos are provided by the California Coastal Records Project.
      Note: Currently no images are available for the SF Bay shoreline.

Tabbed Information Display

Click a pushpin icon to display associated weather, tide, and current information on the tabbed sheets to the right of the map. The selected icon will move to the center of the map, and a star will appear under it to indicate that it has been selected.

  • Tides Tab: A text table of tides or currents, below a graph of the same data. On current graphs, positive (blue) values are flood currents, negative (green) values are ebb currents. Use the clickable text between the graph and the tables to get a prediction for another day, or to select how many days of predictions are displayed.
    The red cursor line on the graph corresponds to the red entry in the tables; click on another table entry or another part of the graph to move the cursor.
    Note: The tide and current predictions are done by XTide, using data from a variety of sources, some official and some not-so-official. Most of the current predictions inside SF Bay are based on unofficial data. Click the Details tab to see where we got the prediction data.
  • Weather Tab: The NOAA marine forecast for the selected icon is displayed. The banner at the top shows the current weather conditions for a nearby city, according to Weather Underground.
  • Details Tab: A brief description of the selected location. For tide and current stations, you'll see a description of the TCD data on which predictions are based.
  • Directions: Get driving directions to or from the selected location. Directions will be displayed in a separate Google Maps window.
  • Search Tab: This tab has two kinds of search:
    • Search for a location by name: Type something into the text box and click the Search button. The list of all locations matching your text will be displayed. Click any of the results to select that location. The Tides, Weather, and Details tabs will now show data for the selected location.
    • Search for tides or currents: In conjunction with the Tides tab, you can search for tidal extremes (max ebb, low tide, etc.) within a specified time period, at the tide or current station selected on the map. A period of one, three, six, or twelve months starts on the date selected in the Tides tab. You can restrict the search to certain days of the week, hours of the day, and a given tidal range. Optionally, you can look for sequences of high and low tide, or max ebb and flood within the specified hours. All matching days are displayed in a table. Click on a date in the table to see that day's tides displayed in the Tides tab.
  • Measure Tab: Measure distances along a track, and get GPS coordinates of points on the map. See instructions on the tab page.
  • Help Tab: You're looking at it now!

Saving and Sharing your Session

  • Click the Save link, to the right of the Help tab. This will pop up a dialog containing two items: a text box which you can copy and paste from, and a clickable link. They each contain the entire state of your session, including the map view, the selected icon, the selected tab, and (optionally) the tide prediction dates and your From address in the Directions tab. Copy and paste from the text box into email, for example, to send a link to this page to someone else. If you want to bookmark the session in your browser, click the link, wait for the page to reload, then bookmark it. Check the Make a very short URL checkbox to shorten the link using the services of goo.gl.