(In 10.8, Apple Calendar will always display an additional alert that says None. To add an additional alert, click the arrow next to None .). Then repeat steps 2 through 4. 1  Once you have added your desired number of alerts for that event, simply click outside the event.
Tomball is a city in Harris County in the U.S. state of Texas, a part of the Houston metropolitan area. The population was 10,753 at the 2010 census. In 1907, the community of Peck was renamed Tomball for local congressman Thomas Henry Ball, who had a major role in the development of the Port of Houston.
Watershed Overview. The Willow Creek watershed is located in northwest Harris County and drains about half of the City of Tomball. Willow Creek is the single primary stream within the watershed and flows into Spring Creek just upstream of where Spring Creek crosses under I-45. The Willow Creek watershed covers about 54 square miles and has about 56 miles of open streams in the watershed, including the primary stream and tributary channels. Based on the 2010 U.S. Census, the estimated population of the Willow Creek watershed is 45,890.