Tide Now CR

About Tide Now CR

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