During the last four decades, a wide range of data on demographic, maternal, child health and other health-related issues has been generated through yearly Geographical Reconnaissance (GR) in Bangladesh. GR is a massive nationwide endeavour of the Ministry of Health and Family Welfare (MOHFW), Government of Bangladesh. During the early part of 2000, the first nationwide GR Update was conducted using a new record-keeping and reporting system. The Unified Management Information System (UMIS) Unit of the MOHFW, in collaboration with the Operation Research Project (ORP) of ICDDR,B: Centre for Health and Population Research, introduced the new system. The ORP assessed the GR Update 2000 as part of a one-year monitoring of the implementation of the newly-introduced record-keeping and reporting system in 22 upazilas of Bangladesh. Selected child health, reproductive heath, and demographic indicators generated through the GR Update 2000 were compared with data from the longitudinal surveillance system in 5 upazilas and from the nationwide survey to assess the quality and coverage. There were variations in the percentage of children aged less than 5 years and in the coverage of DPT3, measles, and vitamin A. The coverage of DPT3, measles, and vitamin A was higher in the GR 2000 than that of the surveillance and nationwide survey data. Similarly, the variation was large in the proportion of currently-married women of reproductive age (CMWRA) and in the use of family-planning methods. A tendency of higher reporting of contraceptive use in the GR Update 2000 was observed compared to the nationwide survey data. One of the key demographic indicators, crude death rate (CDR) in particular, suffered from gross under-reporting. GR undertaking is a time-consuming endeavour. The voluminous data appeared to be collected only to fulfill the reporting requirement of the national level. Despite opportunities, the GR data were either little used or were not at all used at the local level. The process of reviewing selected key indicators generated through the GR by the local managers should be institutionalized. The local managers need to be adequately oriented to make best use of the data, which is collected and own by them. Some authority should be given to them to make required adjustment in the design of strategies for conducting GR in a better way, which can be used for improving the delivery of Essential Services Package (ESP).