Guide for Presentation of Water-Level Information from Groundwater Sites

2015 ◽  
Author(s):  
Keyword(s):  
Water Level ◽  
Level Information

scholarly journals The effect of water level in vertical aquaculture systems on production performance, biochemistry, hematology, and histology of Anguilla bicolor bicolor

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Eko Harianto ◽  
Eddy Supriyono ◽  
Tatag Budiardi ◽  
Ridwan Affandi ◽  
Yani Hadiroseyani
Keyword(s):  
Water Level ◽  
Normal Values ◽  
Stocking Density ◽  
Water Levels ◽  
Production Performance ◽  
Fish Weight ◽  
Important Study ◽  
Level Information ◽  
Gill Filaments ◽  
Skin Epidermis

AbstractThe water level in the cultivation of eel (Anguilla bicolor bicolor) is an important study in order to provide the optimal water level for cultivation. Optimizing the water level will affect the substitution of respiration energy with energy to grow. In addition, the water level information is related to the efficiency of water use for eel production in the future. Information on water level for eel production is still very limited, so this research is necessary to do. A total of 120 eel elver (initial weight 13.66 ± 0.09 g) were collected from eel companies in Bogor City, Indonesia. Fish were reared in vertical aquaculture systems with a stocking density of 10 fish per container for 60 days. The artificial feed containing 55% protein given as much as 3–5% of the biomass. Absorption and water replacement were done 20% per day. The result of this research showed that fish weight increased with an average of 33.45 ± 0.33 g. Different water levels had an impact to KKb, SGOT, ALP, and He. There was erosion of the skin epidermis and necrosis of the gill filaments due to the adaptation process. Water quality was within the optimum range for all treatments and 1.5 cm water level is recommended for maintenance (SGOT, ALP and He values were closest to normal values).

scholarly journals Perancangan Sistem Deteksi Dini Bencana Banjir Menggunakan Teknik Pengiriman DTMF Berbasis Modul RF 433 Mhz Dan Arduino

2020 ◽  
Vol 8 (2) ◽  
Author(s):  
M. Zainal Arifin ◽  
Ema Utami ◽  
Eko Pramono
Keyword(s):  
Early Detection ◽  
Natural Disasters ◽  
Water Level ◽  
River Water ◽  
Rainy Season ◽  
Short Message ◽  
Radio Waves ◽  
Level Information ◽  
Internet Networks ◽  
Normal Status

Flood is one of the unpredictable natural disasters, especially in the rainy season. There are many effects for many people, such as they lose their property and sometimes have many victims due to floods. So that, estimation of water level is important to detect the basic risk of flooding. In this study used the Water Level (TMA) in form of a short message technique which is can be sent from radio waves and river water level sensors. The value of the sensors to know the highest river water level itself, so it does not need signals, internet networks and also pulse for it. The final result of this study is the water level information which is normal status, standby I, standby II, standby III or standby IV.Keywords: RF 433MHz, Flood, Arduino, Early Detection

scholarly journals Estimating Real-Time Water Area of Dongting Lake Using Water Level Information

Water ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1240
Author(s):  
Yuannan Long ◽  
Rong Tang ◽  
Changshan Wu ◽  
Changbo Jiang ◽  
Shixiong Hu
Keyword(s):  
Linear Regression ◽  
Water Level ◽  
Real Time ◽  
Yangtze River Basin ◽  
Water Area ◽  
Dongting Lake ◽  
Water Levels ◽  
Lake Area ◽  
Level Information ◽  
Maximum Water

Dongting Lake, the second largest freshwater lake in China, is an important water source for the Yangtze River Basin. The water area of Dongting Lake fluctuates significantly daily, which may cause flooding and other relevant disasters. Although remote sensing techniques may provide lake area estimates with reasonable accuracy, they are not available in real-time and may be susceptible to weather conditions. To address this issue, this paper attempted to examine the relationship between lake area and the water levels at the hydrological stations. Multi-temporal water area data were derived through analyzing Moderate Resolution Imaging Spectroradiometer (MODIS) imagery using the Automatic Water Extraction Index (AWEI). Then we analyzed the inter- and intra-annual variations in the water area of the Dongting Lake. Corresponding water level information at hydrological stations of the Dongting Lake were obtained. Simple linear regression (SLR) models and stepwise multiple linear regression (SMLR) models were constructed using water levels and water level differences from the upstream and downstream hydrological stations. We used the data from 2004 to 2012 and 2012, respectively, to build the model, and applied the data from 2013 to 2015 to evaluate the models. Results suggest that the maximum water area of the Dongting Lake during 2000–2015 has a clear decreasing trend. The variations in the water area were characterized by hydrological seasons, with the annual minimum and maximum water areas occurring in January and September, respectively. The water level at the Chengjingji station, and water level differences between upstream stations and the Chengjingji station, play a major role in estimating the water area. Further, results also show that the SMLR established in 2012 performs the best in estimating water area of the Dongting Lake, especially with high water levels.

scholarly journals Collection and extraction of water level information from a digital river camera image dataset

Data in Brief ◽  
2020 ◽  
Vol 33 ◽  
pp. 106338
Author(s):  
Sanita Vetra-Carvalho ◽  
Sarah L. Dance ◽  
David C. Mason ◽  
Joanne A. Waller ◽  
Elizabeth S. Cooper ◽  
...  
Keyword(s):  
Water Level ◽  
Camera Image ◽  
Image Dataset ◽  
Level Information

scholarly journals Inland Water Bodies Monitoring using Satellite Altimetry over Indian Region

2014 ◽  
Vol XL-8 ◽  
pp. 1035-1041 ◽  
Author(s):  
S. Chander ◽  
D. Ganguly ◽  
A. K. Dubey ◽  
P. K. Gupta ◽  
R. P. Singh ◽  
...  
Keyword(s):  
Water Level ◽  
Satellite Altimetry ◽  
Tide Gauge ◽  
Water Bodies ◽  
High Rate ◽  
Inland Water ◽  
Gps Survey ◽  
Level Information ◽  
Inland Water Bodies

Satellite altimetry for inland water applications has evolved from investigation of water height retrieval to monitoring since last two decades. Altimetry derived reservoir/ river levels can subsequently be used to deal with key inland water resources problems such as flood, rating curve generation for remote locations, reservoir operations, and calibration of river/lake models. In this work 29 inland water bodies were selected over Indian region to monitor from satellite altimetry. First cut selection of potential water bodies was based on availability of altimeter tracks and geographic locations. Then feasibility study was carried out to check the potential of availability of in-situ measurement and scope of GPS survey for final selection. An algorithm is proposed and tested for the waterlevel retrieval over the Ukai Reservoir which fulfil all the necessary requirements. The methodology is based on averaged high rate waveforms, modified retracker and range corrections. The results were then validated with the GPS survey and in-situ tide gauge dataset. SARAL derived water-level information for six different retrackers were compared with the in-situ tide-gauge dataset installed close to the Ukai Dam. Averaged high rate waveforms were analysed for better performance, i.e. single 40 Hz, and multiple 40-Hz. A field trip was conducted on 17th January 2014, same day on the SARAL pass, using two Dual frequency GPS instruments. New improved retracker work best with overall RMSE within the range of 8 cm. The results supports that AltiKa dataset can be utilized for more accurate water level information over inland water bodies.

scholarly journals PROTOTIPE RANCANG BANGUN PINTU BENDUNGAN OTOMATIS UNTUK IRIGASI PERTANIAN BERBASIS MIKROKONTROLER ARDUINO ATMEGA328

2020 ◽  
Vol 10 (2) ◽  
pp. 97-102
Author(s):  
Iman Permana
Keyword(s):  
Water Level ◽  
Human Error ◽  
Water Discharge ◽  
Water Storage ◽  
Level Control ◽  
Error Factor ◽  
Hydropower Dams ◽  
Level Information ◽  
Control Work ◽  
The Web

Technology as a result of human inventions to facilitate the work of increasingly advanced human technology and the development of various kinds of innovations especially developments in the field of microcontroller technological inventions penetrated various aspects ranging from transportation medicine and agriculture The large number of residents who use hydropower dams as water storage Open and close water dam gates automatically are buildings and structures that can function to open and close the flow of water to the river upstream according to the water level at the headwaters or dams. This tool uses the principle water level control work for water level detection using ultrasonic sensors with the design of this tool can then make it easier in terms of monitoing in opening and opening the water dam door automatically so as to facilitate in regulating the flow of water discharge without having to use a guard by adding an LCD to make it easier to show water level information and alarms on dams that can change in an uncertain period of time and then discharge reportsthe height of the water can be seen through the web so that it can facilitate and reduce a human error factor human error

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