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# Township&ranges

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### Township&ranges

2. 2. USGS – United States Geological Survey<br />A scientific organization established in 1879 by Congress<br />Its purpose is the classification of “public lands”. <br />
3. 3. Dividing up the United States. <br />The United States is divided up into 50 states. <br />The boundaries of states are determined either by lines of latitude or longitude or natural boundaries, such as rivers. <br />
4. 4.
5. 5. Dividing up the individual states.<br />Just like a larger map is divided up according to longitude and latitude, states are divided up according to townships and ranges. <br />Township is like latitude, flat across the state. Divided north (N) and south (S)<br />Ranges are like longitude, long-ways across the state. Divide east (E) and west (W)<br />
6. 6. Townships and Ranges<br />Just like latitude and longitude have the equator and prime meridian, township and range also have a principle starting point.<br />Township base line<br />Range principle meridian<br />
7. 7.
8. 8. Using your maps what is the notation for congressional townships:<br />A =<br />B =<br />C =<br /> {T2N, R3E}<br /> {T3S, R1W}<br /> {T2S, R4E}<br />
9. 9. Congressional Township<br />A congressional township is a parcel of land that is 6 miles long by 6 miles wide. <br />Congressional Township<br />
10. 10. Congressional Township<br />A congressional township is still a large piece of land. ( 1 township = 36 square miles)<br />To further define a township, each township is subdivided into 36 equal sized squares. <br />These subdivisions are 1 square mile in size. ( 1 square mile = 640 acres)<br />
11. 11. The yellow box represents 1 congressional township.<br />Pay special attention to how the congressional township subsections are numbered <br />
12. 12. Using your maps what is the notation for districts:<br />D =<br />E =<br />F =<br />G = <br /> {21 of T1S, R2W}<br /> {15 of T2S, R3W}<br /> {31 of T2S, R3W}<br />{23 of T2S, R2W}<br />
13. 13. Dividing up the districts.<br />Every district is still a large area of land, thus further subdivision is used. <br />Each district is divided into 4 equal squares. They are labeled: northeast (NE), northwest (NW), southeast (SE) and southwest (SW)<br />If further division is needed, the same process is repeated.<br />
14. 14.
15. 15. Lets use our maps to find the location of the letter H<br />H is in the northwest quarter of the northeast quarter of the 10th district of the second south township and the third west range.<br />H = {NW ¼ of NE ¼ in 10 of T2S, R3W}<br />
16. 16. Each state determines its own baseline and principle meridian. <br />Every location in the United States can now be accurately mapped by state, congressional township, district, location within district. <br />
17. 17. Lets look at Arkansas.<br />