Tide Now CR

المد والجزر والتيارات لنهر كولومبيا وخليج ويليبا وميناء جرايز.

Tide Now CR is a tide and currents calculator for the Columbia River, Willipa Bay, and Grays Harbor. It now supports current stations as well as tide stations. It displays tide/currents tables and graph. See example displays. See the region names, each one states either tide or currents in addition to the area.

Self Contained - Offline Operation

This app does not use the internet to get its results. It performs its function purely by calculation.

Quick Simple and Clean

Predictions are quick and the app is simple to use and understand. Gestures are supported for looking at the next and prior day tides. There are no ads and app cannot access phone features. The app is small (283 KB).

User Options

Controls for the user are provided by three action bar icons and seven items in the settings menu. The action bar controls are Set Location, Set Date, and Refresh. The settings controls are Add Station to Favorites, GMap Station (internet), Change Color Scheme (Bright/Dark/ 3 others), Sun and Moon Info (3 levels available), Mark Height (lets you specify a height and the times are given on the display), About Gestures, and Overlay Waveform (lets you compare two different location graphs).

Phone or Tablet

The app works on any Android device at level 3.0.3 or above, most phones and tablets are supported. Depending on the nature of your android device, the landscape or portrait mode display may present a more useful size.

Accurate Predictions

This app was written using well-known tidal prediction algorithms and publicly available location data. It can be expected to match very closely to federally-published tide heights and tidal current tables. It uses the "Harmonic Prediction of Tides" methodology in long use for tide elevation predictions.

Designed for On The Spot Use

The tidal status presentation gives an immediate snapshot of the tide situation, more useful than just a standard list of highs and lows. The display can be refreshed at any time to update this status. This app is designed for use while actively out and about along the waterfront. It uses large text and the black on white text choice is easily read on the bright sun.

200 Year Calendar

In addition to today's tides, a date picker is available to choose any date from 1901 to 2100. The app does not have to be refreshed on the new year.

Tide Regions and Stations (note: "Tides" or "Currents for each grouping)

Region Bar to Bridge Tides

North Jetty

Jetty A

Ilwaco

Chinook

Hammond

Warrenton

Astoria Port Docks

Astoria Youngs Bay

Cathcart Landing

Region Bar to Bridge Currents

Baker Bay entrance, E of Sand Island Tower

Sand Island Tower, 0.9nm SE of (north channel)

Sand Island Tower, 1nm SE of (midchannel)

Clatsop Spit, NNE of

Sand Island, SSE of

Chinook Point, WSW of

Point Adams, NNE OF

McGowan, SSW of

Hammond, northeast of ship channel

Youngs Bay Bridge

Region Bridge to Wauna Tides

Hungry Harbor

Astoria Tongue Point

Settlers Point

Harrington Point

Knappa

Skamokawa

Wauna

Region Bridge to Longview Currents

Point Ellice, east of

Tongue Point, northwest of

Woody Island Channel

Woody Island Channel (off Seal Island)

Quinn Island, Prairie Channel

Clifton Channel

Hunting Island, south of

Cathlamet Channel, SE of Nassa Point

Walker Island, south of

Region Longview Upriver Tides

Longview

Kalama

Saint Helens

Rocky Point

Vancouver

Portland

Washougal

Beacon Rock

Region Willipa Bay

Nahcotta

Paradise Point

Bay Center

South Bend

South Bend, Willipa River Current

Raymond

Toke Point

Region Grays Harbor Tides

Westport

Ocean Shores Point Brown

Bay City

Markham

Aberdeen

Cosmopolis, Chehalis River

Montesano, Chehalis River

Region Grays Harbor Currents

Grays Harbor Entrance

Entrance, 0.2 mile south of north jetty

Entrance, Point Chehalis Range

Entrance, 1.1 miles NW of Westport

Entrance, 0.6 mile WNW of Westport

Westport, channel 0.4 mile NE of

Channel, 1.5 miles north of Westport

Channel, 2.1 miles NNE of Westport