Ogo confluence oru ngo
The Degree Confluence Project bụ World Wide Web dabeere, ọrụ afọ ofufo niile nke na-achọ ime ka ndị mmadụ gaa na nke ọ bụla nke integer ogo intersections nke latitude na longitude na Ụwa, ikesa foto na akụkọ nke ọ bụla nleta online.  Ihe oru ngo a na-akowa onwe ya dika "ihe nlere anya nke uwa".￼

Requirements 
Kpọmkwem ọnọdụ nke nkwekọrịta ogo ogo ọ bụla na-eji WGS 84 kwụ ọtọ datum, na ndị ọbịa na-emekọrịta ihe nrịgo fọrọ nke nta ka ọ bụrụ mgbe niile na-eji ndị nnata GNSS.  Maka nleta na-aga nke ọma, onye ọbịa ahụ aghaghị ịbanye n'ime 100 mita nke ebe mgbagwoju anya, ma bipụta akụkọ na ọtụtụ foto na webụsaịtị ọrụ.  Nleta, ma ọ bụ nwara nleta, nke na-adabaghị n'iwu ndị a ka nwere ike ịdekọ na webụsaịtị dị ka nleta ezughị ezu.  Ihe oru ngo a na-akwalite nleta nleta ogbako digri nke a na-eleta na mbu, na otutu ebe ngbasa ozi -- karia na mpaghara na-adighi anya nke obodo mepere emepe - eletala otutu oge.￼

The total number of degree confluences is 64,442, of which 21,543 are on land, 38,409 on water, and 4,490 on the Antarctic and Arctic ice caps. The project categorizes degree confluences as either primary or secondary. A confluence is primary only if it is on land or within sight of land. In addition, at latitudes greater than 48o only some points are designated primary because confluences crowd together near the poles. Both primary and secondary confluences may be visited and recorded.