“SOIL INVESTIGATION OF WATER SCHEME SUPPLY(CASE STUDY: OTUOKPOTI IN OGBIA LGA, BAYELSA STATE)”. INTERNATIONAL JOURNAL OF MODERN TECHNOLOGY AND ENGINEERING RESEARCH , vol. 4, no. 1, Apr. 2026, pp. 56-78, https://caarnjournals.com/index.php/IJMTER/article/view/253.