Page 793 records and reports 845 



On the same form there are included certain Office statistics incident to the verification and review 

 of the survey, such as, names of the verifier and reviewer, the time required for the Office completion 

 of the survey, and the amount of revision made to the sheet during verification. 



b. Immediate attention routing. — As soon as a Descriptive Report is received at the Washington 

 Office it is examined and routed to sections for immediate attention to any specific information 

 therein. Form M-238 is used. 



c. Tide note. — The Records are examined, insofar as tide reducers are concerned, in the Divi- 

 sion of Tides and Currents. A memorandum is prepared, approving the plane of reference for the 

 hydrographic survey, based on the information included in the tide note submitted with the Descrip- 

 tive Report (see 8432) . There are also given the final value of the plane of reference (sounding datum) 

 in relation to the tide staff and bench marks, and the height of the plane of mean high water above the 

 plane of reference. Attention is called to any deficiency in the tide records. Form 712, Tide Note for 

 Hydrographic Sheet, is used for this memorandum and is substituted for the original tide note, which 

 is discarded. (See 9323.) 



d. Review. — A report is written bj^ the cartographer who reviews the survey. This report com- 

 pares the results of the survey with prior surveys in the area and with the charts, calls attention to any 

 deficiencies, and lists additional work which should be done. The report is inspected by the Assistant 

 Chief of the Surveys Branch, and is approved in wTiting by four administrative officers. The original 

 of this report is inserted in the Descriptive Report, and a copj^ is sent to the Chief of Party under 

 whose direction the field work was done. (See 9348 and 935.) 



845. Deficiencies in Former Descriptive Reports 



Important deficiencies in Descriptive Reports submitted in the past have been: 



(a) The report consisted mainly of general statements of self-evident information. 



(b) Important charted soundings were not mentioned individually nor was definite recommenda- 

 tion made for their disposition. 



(c) The time spent on the investigation of differences between the new survey and prior surveys 

 was not given. 



(d) The Descriptive Report was not signed by the hydrographer or was not approved by the 

 Chief of Party. 



(e) References to United States Engineers blueprints did not include the survey numbers and 

 dates. 



(/) Bridge clearances were not compared with charted or published values, or recommendations 

 were not made as to the best disposition of differences. 



(g) No mention was made of overhead cables, submerged cables, transmission lines, etc. 



(h) No comparison was made with the published chart or with prior surveys because of differences 

 in scale. 



85. MISCELLANEOUS REPORTS 



A number of miscellaneous reports are required from all hydrogi-aphic siu-vey parties 

 in addition to any previously described in this chapter. Most of these are required at 

 certain time intervals during the survey, or at the end of the season on an area basis. 

 A description of each report, or form, required and the data to be furnished are given. 

 A list of these is given in 859; it should be referred to in conjunction with the list in 8351. 



851. Progress Sketches and Reports 



Monthly, season's, and annual progress sketches and reports of all work accom- 

 plished, shall be submitted by field parties in accordance with the Regulations. In 

 certain circumstances a semiannual progi'ess sketch and report are required. Each of 

 these shall be submitted as soon as practicable after the end of the period for which the 

 report is made. All progress sketches shall be made on tracing cloth, using black ink 

 only. Figure 185 shows the standard symbols to be used on progress sketches. 



465382 — 44 52 



