Volumetric Vairations of Inland Water Body: A Case STDY of Manchar Lake

Abstract &#160;After the construction of the Grand Ethiopian Renaissance Dam (GERD), Nasser Lake (NL)became one of the most challenging hot spots at both local and global level. It is one of the biggest manmade reservoirs in the world and the most important in Egypt. It is created &#160;in the southern part of the Nile River in Upper Egypt after the construction of Aswan High Dam (AHD). The water level in NL might fluctuate between 160 to 182 m above the mean sea level. Monitoring NL &#160;water depth is an expensive and time-consuming activity. This work investigates the possibility to use information from the Sentinel missions to estimate the depth of NL as an inland water body, in the frame of estimating storage variations from satellite measurements. In this preliminary study, we investigated the relationship between the radiance /reflectance of optical imagery from two instruments SLSTR and OLCI instruments hosted by the Sentinel-3A platform and in situ water depth data using the Lyzenga equation. The results&#160; indictaed &#160;that there was a reasonable correlation between Sentinel-3 optical data and in situ water depth data. Also, Heron's formula was used to estimate water storage variations of NL with limited in situ data. In addition, equations governing the relationship between water level and both surface area and water volume were worked out. This study is in the framework of a bilateral project between ASRT of Egypt and CNR of Italy which is still running.&#160;Keywords: Sentinel, SLSTR, OLCI, Inland water body, Nasser Lake, Egypt, Water Depth, GERD, AHD, Egypt

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Some aspect of the physico-chemical and biological properties of Cross river, an inland water body in South-eastern Nigeria

Global Journal of Agricultural Sciences ◽

10.4314/gjass.v4i2.2263 ◽

2006 ◽

Vol 4 (2) ◽

Author(s):

SN Ochang ◽

EO Ayotunde ◽

IB Okey

Keyword(s):

Water Body ◽

Biological Properties ◽

Cross River ◽

Inland Water ◽

South Eastern ◽

Physico Chemical ◽

Inland Water Body

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ASSESSMENT ON SUITABILITY OF NORMALIZING AND PROBABILITY TYPE BENTHIC INDICES FOR PREDICTION OF BEHAVIOR OF INLAND WATER BODY

International Journal of Research -GRANTHAALAYAH ◽

10.29121/granthaalayah.v3.i9se.2015.3120 ◽

2015 ◽

Vol 3 (9SE) ◽

pp. 1-5

Author(s):

Gayatri Gautam

Keyword(s):

Water Body ◽

Sampling Period ◽

Wiener Index ◽

Pollution Level ◽

Inland Water ◽

Inappropriate Use ◽

Inland Water Body ◽

Probabilistic Type ◽

Tank Water

Natural variability in diversity of benthic macro invertebrate fauna or benthos has become a valuable tool in assessing, modeling and monitoring of water quality of inland water body with respect to its portability and of pollution level. However, inappropriate use of these indices may leads to false interpretation or prediction of behavior of inland water body. In this study we have employed two normalizing (i.e Shannon-Wiener Index (H’), Pielou´s Evenness (J’)) and one probability type (HurlbertPIE Index(PIE)) indices to evaluate behavior of Baikona tank water body between Jan-2008 to Dec 2009.Sampling was carried out for period of 24 months at three different location and diversity of benthos for each location was tabulated. It is observed that monthly variation these indices show same trend during observation period. Coefficient of correlation among normalizing indices is observed lesser degree when compared to correlation between normalizing and probability type index. Degree of correlation is equitable when samples in all three sampling stations are mapped as single for each sampling period. It can be summarized that to model the tank behavior (i)both normalizing type and probabilistic type indices to be considered.(ii)all samples taken at a time at different locations are to be mapped as single sample.

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