REVIEW OF RELATED LITERATURE AND STUDIES
It is an integral part of the study. It may also be a required part of proposals. The main purpose is to analyze scientific works by other researchers that the researchers used for investigation critically. It is also secondary sources, and as such, do not report any new or original experimental work.
Basically this part of the study focuses on the foreign and local types of water level monitoring system and also the articles involved and necessary for the improvement of the study.
And devices which utilized an Ultrasonic sensor, GPRS module and Microcontroller are also included.
FOREIGN LITERATURE
Rainfall, Stream, and River Level Monitoring System
The Napa County Flood Control and Water Conservation District and the Cities of Napa and St. Helena operate and maintain a network of weather stations that provide real time rainfall data and stream and river levels throughout Napa County, which can be accessed by clicking on the following link: Napa Valley Regional Rainfall and Stream Monitoring System. The website presents data from a network of some 50 gages that record rainfall and stream and river levels. Website users can easily see current stream and river levels, compared to monitor stage and warning stage levels. The website also has the capability to provide graphs showing data from October 2001 to the present.
The website provides:
•Real-time rainfall intensity and other local weather data;
•Current water levels in area creeks and the Napa River with monitor and flood levels;
•Historical data for gage sites oeprated by various Napa County agencies dating back to October 2001;
•Ability to view data within multiple map views or view lists of gage sites from North Bay regional down to selected portions of the Napa Valley;
•Graphing and tabular data downloading functions for selectable time periods between October 2001 and the present;
•Links to popular regional weather and river level
Links: INQUIRER.net Tuesday, August 7th, 2012 'Noah ' Vs Floods Launched By Aurea Calica (The Philippine Star) Updated July 07, 2012