ABSTRACT: As we all know; trees are the true assets of urban areas and they are also part of our community's infrastructure. Thus, they require care and maintenance same as other public properties in the cities. Trees may cause personal injury or property damage without proper care. The aim of this study was to design a web application for the Necip Fazil Kisakurek Park, located in the district of Onikisubat, Kahramanmaras, Turkey. This study was conducted in two parts. In the first part, an inventory for trees in the park was conducted. GPS coordinates, tree height, diameter at breast height, tree type (Deciduous/Evergreen) of each individual tree were gathered with ground measurements and field observations. Attributes of 70 trees were retrieved during the inventory. After the tree inventory, a total of 19 different species were identified where Fraxinus was found to have the largest number of trees with 18 in the study area. In the second part, a database was designed for the trees inventoried and then two web apps (applications) were created. The first web app was created for general public using ArcGIS Online. Attributes of each tree are given to the user via popup window in this web app. This app is publicly accessible and users may interact with the app via browsers by personal computers, tablets, or smartphones. The second web app is designed for local government utilities only in order to manage tree information in the Necip Fazil Kisakurek Park. With this app, local authorities will be able to edit and update tree information in the park. This app will only be accessible to local authorities and not to general public.

Groundwater recharge has been calculated of Duhok Dam District, Kurdistan region of Iraq by using soil water balance parameters, because of limited sources of water. The study area of 228.96 km2. The main purpose of this paper is to apply a water balance concept with using (https://livingatlas.arcgis.com/waterbalance/) website data models in the Duhok dam basin to describe the groundwater recharge. The influence of groundwater recharge on the rainfall-runoff process was investigated in order to have a better knowledge of the storage runoff water in the Duhok dam lake, the annual groundwater change is (0.4mm, 1mm, -1mm, 12.3mm and -1.3mm) for the since (2016-2017, 2017-2018, 2018-2019, 2019-2020 and 2020-2021) (respectively); depending on the rainfall- runoff amount and the soil moisture content (19.75%, 19.41%, 29.33%, 6.5% ) above average for the since (2016-2017, 2017-2018, 2018-2019, 2019-2020) (respectively) which lead to be water surplus, but at since (2020-2021) soil moisture content was below average (-8.3%) lead to decrease groundwater storage (deficit water is happen), Finally, all of the results of water balance parameters indicate the reservoir of Duhok dam basin need to more rainfall to renewable (2021-2022) hydrological year.

The increasing of human and residential with the evolution system in the world cased to Increase human requirements, one ofthose requirements is a vehicle like cars and that vehicle need to fuel because they complement each other. Sometimes the fulfillment of some requirements may give negative results. This study focuses on how is the geographical distribution of gas stations in Duhok city and it’s reality with the laws system of urban in the northern IraqiKurdistan region government (IKRG) and its analysis by the geographic information system (GIS).For this study was collected some information, data about the Gas stations in Duhok city, global position system (GPS) points, obtaining the laws or standard of a geographical establishing station in the regional government, and working on the Digital Image of a city in 6m resolutions was captured in 2015. Besides that, the information and data wereprepared by Microsoft excel 2016 and analyzed by ArcGIS 10.4.1 and erdas Imagine 2016. After that was analyzed the standard of 20 m far from the streets, 30 m far from the residential area,and 50 m far from the services area.In this study, a word (system) was used instead of a (standard) word. Because all of those standards were related to the Iraqi Kurdistan Region (IKR) and maybe those standardsof fuel stationswere different from other countries.At the end of analyzing more than 50 Gas stations showing some of those stations don’t right with the laws of the standard city and environment in government. On the other hand, continuous increase in the number of stations almost randomly or without the use of laws, many problems can arise for the environment and infrastructure of the city in the future.