Water Resources Assessment

Surface water
A review The status of river flow gauging stations showed that most of the stations are operational, although all of them needed either minor/ or major rehabilitation (see table below).

The groundwater monitoring network is not adequate in the basin although some monitoring boreholes have been recently installed with automated data loggers for recording water level fluctuations, temperature, pressure as well as water quality parameters. An observation network is currently composed of 14 observation wells for the whole basin but the plan is to install additional 15 new monitoring well stations

Borehole Monitoring Stations

Water quality
Monitoring is done to ensure the quality of the water in the water bodies confirms the recommended standards as set by Tanzania Bureau Standard. There is also a monitoring system to regulate/ monitor the effluent discharged into the water bodies complies with the required effluent standards. But currently there is only one discharge permit has been issued in the Basin.
Discharge Permits

Sediment monitoring is supposed to be done in most of our river gauging stations but currently it is not conducted due to the prohibitive cost of its analysis. However, there is one automatic sediment sampler at TPC in Kikuletwa River (1DD1) which was installed in 2005 by the University of Dar es Salaam (College of Engineering and Technology – Water Resources Department).

Water demand
Current water supply does not meet demand due to water being over-abstracted (from the respective sources). Approximately 1,000 abstractions have been registered and have got either provisional or final water use permits.
The PBWB maintains a register (softcopy and hardcopy) of water use information in which water use applications and permits are recorded. A PBWB Microsoft Access database was created during rehabilitation of New Pangani Falls (Hydropower Production) where all information on water uses is kept in. The Database contains information on the permits and abstractions for various water uses like domestic, industrial, livestock, irrigation and hydropower generation.
The basin has issued and registered a total of approximate 1,000 water use permits. Only one discharge permit issued and registered in the database. The water use and discharge permits are shown below:
Water Use/Abstraction Points